SXSW Music Hackathon Championship 2015

What: SXSW Music Hackathon Championship 2015
When: March 18 – 19, 2015
Where: Hilton Austin Downtown500 East 4th Street, Austin, TX

We'll be at SXSW Music Hackathon Championship again this year. The hack day is free and open to the public. You don't need a SXSW badge, but you'll need to fill out a form to ensure you're a developer.

The event will take place Wednesday and Thursday at the Hilton Austin Downtown. The award ceremony will take place Friday evening at a separate location. See the SXSW Music Hackathon Championship website for complete details.

Event location map

∞  March 06, 2015 — 5:01PM

Posted by Devin Sevilla at 5:01PM in Events |


Recap: Music Hack Day Groningen

Earlier this month, we had the pleasure of attending Music Hack Day at the Chordify office in Groningen, Netherlands. The hack day coincided with the epic Eurosonic Noorderslag music festival, featuring performances by nearly 200 independent artists over four days.

Though the number of hackers was small, and none of the teams wound up using the Rdio API, the quality of the hacks was great. Here's a rundown of what got built:

  • In C(offeeScript) - Site
    UThe folks over at put together this really cool hack. Using Firebase, the Web Audio API, and CoffeeScript, they implemented a browser-based performance site that allows visitors to collaborate on performing Terry Riley's "In C". Visitors can individually select which look to play, and can hear either the whole performance, or just their part through their speakers. Having multiple people visit the site on different computers in the same room gives off a Laptop Orchestra vibe, and sounds really nice. Winner, Rdio prize for Most Creative Hack

  • Mobile Arrange
    Mobile Arrange is a proof of concept iPad app that presents the user with a grid of notes to tap. Using a sample dataset from Chordify, the hack maps relevant notes to the grid based on the chords from a song, allowing you to play along, rearrange, or alter the chord voicings.

  • Flappy Music - Site
    No modern hackathon would be complete without a Flappy Bird knock off. This variation accepts a SoundCloud link, and uses the audio waveform to generate a Flappy Bird level, which you play in real-time with the song. Good luck making it to the end of the song!

  • DJZP Toolkit
    Billed as "a multi-purpose toolkit for the post-post-modern (self-employed) DJ", this Max/MSP hack combines a bunch of interesting technologies, including a Myo armband, and LED wristbands from Dutchband. The hack supports a preparation mode, allowing you to use gestures to listen to songs and add them to a playlist while you're doing other things (like making a sandwich), and a performance mode, that processes the sensed motion and audio to manipulate music and control a sea of LED wristbands.

  • tabbit - Source
    Using the same Chordify sample dataset as Mobile Arrange, the tabbit team decided to build a Guitar-Hero-in-the-browser game. Because of limitations in the dataset, the game only provided the chords' root notes, and didn't quite support audio processing, but it was a solid effort, and a cool concept.

  • Lost in Translation - Site
    Built by the evangelists of one of our competitors, Lost in Translation is a "find local artists" hack. Using your location (or the name of a location that you provide), the hack searches the Echonest for geo-relevant artists, and puts together a playlist of tunes for you to listen to.

This list of hacks is also up on Hacker League, with info provided by the hackers themselves.

∞  January 30, 2015 — 9:00AM

Posted by Kevin Nelson at 9:00AM in Events |


Music Hack Day Groningen 2015

What: Music Hack Day Groningen 2015
When: January 15 – 16, 2015
Where: drie&zestig (Chordify HQ)Boterdiep 63, 9712 LK Groningen, The Netherlands

Start 2015 off right at Music Hack Day Groningen. Register at both Eventbrite and Hacker League. See you there!

Event location map

∞  January 09, 2015 — 1:00AM

Posted by Devin Sevilla at 1:00AM in Events |

DocumentationReleasesWeb Service API

Web Service API Improvements

We've got three new features for the Web Service API- just in time for some fun hacking over the holiday break!

Keep Listening

Keep Listening

Know what your user has been recently grooving to with the Keep Listening API. With a list of up to ten of the latest sources you'll be able to have a much more targeted view of a user's current mood and tastes. Requires user authentication.



The Favorite API endpoints are now available to everyone. You can view and modify a user's favorite tracks, albums, playlists, artists, and stations. Synced (aka Downloaded) information is also available to view and edit. The Collection endpoints are still available but are now depreciated. Requires users authentication.

Dominant Color

Dominant Color

With the dominant color extra you can now use the Rdio selected color from album artwork, custom playlists, and stations. It's not just the most saturated and it's not just the most common- the algorithm was specially tailored by our designers to pick the "best" color available.

∞  December 19, 2014 — 8:00AM

Posted by Rebecca Stecker at 8:00AM in Documentation, Releases, Web Service API |

Android SDKReleases

Android SDK v2.0.2

Version 2.0.2 of the Rdio Android SDK includes the following improvement:

  • Removes cookies after login so users can authenticate with a different Rdio account

Download the latest release, checkout the getting started guide, and let us know what you think.

∞  December 04, 2014 — 5:23PM

Posted by Rebecca Stecker at 5:23PM in Android SDK, Releases |

iOS SDKReleases

iOS SDK v2.1.4

Version 2.1.4 of the Rdio iOS SDK includes the following improvement:

  • Fixed login view when device is in landscape mode

Download the latest release, checkout the getting started guide, and let us know what you think.

∞  November 14, 2014 — 4:17PM

Posted by Rebecca Stecker at 4:17PM in iOS SDK, Releases |


Recap: Music Hack Day Boston 2014

Music Hack Day Boston 2014 took place during a chilly, but lovely weekend in Microsoft's NERD building. A happy collection of hackers were in attendance and the event went smoothly from start to finish.

The hacks at this event were music-creation focused. The Seaboard folks were in attendance and the boards brought were put to excellent use, the Sea of Grain hack just being one example. Other hacks of note were auditory.vim which (almost) makes me want to learn how to use the Vim environment and the Keplerphone which lets you listen to the music of the stars.

There were a good number of Rdio users in attendance and a couple of fun Rdio hacks produced:

  • JukeApp - GitHub, Demo video
    Automagically create dynamic music playlist based on who is in the room. Winner, best use of Rdio API

  • Aardvark - Site
    A playlist generator based on Twitter mentions

  • Meydio
    Uses the Meyda JS library to visualize audio data on Rdio in Chrome

All in all the crowd and demos were top notch. The bus trip at the start of the night from the Microsoft office to the Spotify office proved to be a great bonding experience. Definitly looking forward to Music Hack Day Boston 2015!

A list of all of the hacks is up at Hacker League.

∞  November 14, 2014 — 9:29AM

Posted by Rebecca Stecker at 9:29AM in Events |


Music Hack Day Boston 2014

What: Music Hack Day Boston 2014
When: November 8 – 9, 2013
Where: Microsoft N.E.R.D Center1 Memorial Dr #1, Cambridge, MA 02142

Join us in Boston again for another exciting Music Hack Day! While you wait in eager anticipation for the event, why not check out the hacks from MHD Bostin 2013 and 2012!

Event location map

∞  October 30, 2014 — 9:29AM

Posted by Rebecca Stecker at 9:29AM in Events |


Recap: Music Hack Day Amsterdam 2014


The Amsterdam chapter of Music Hack Day has been going strong for a while now. This weekend marked the fourth annual event, and as always, the environment and the hacks were nothing short of inspiring. People worked on formant synthesizers, web audio and web MIDI synthesizers. The Axoloti project, which was started at the first MHD Amsterdam showed off some great DIY hardware tricks, and one team even hacked together a bunch of digitally controlled actuators for a trumpet. You can check out the full list of hacks on Hacker League (link at the bottom), but before you do, check our our rundown of the hacks built with Rdio.

  • MiXTee
    MiXTee is a service concept that lets you print out t-shirts adorned with your favorite album covers them. Connect to Rdio to grab your favorite playlist, use the MiXTee editor to organize the album art on your shirt, and click “Go” to have a t-shirt printing company print and mail you your shirt. The back of the shirt also has a QR code to point people you encounter on the street over to your playlist. Winner, best use of the Rdio API

  • lyrics sun burst
    A mashup between Rdio and musiXmatch, Lyrics Sunburst provides a new way to visualize the lyrics to whatever you’re listening to at the moment. Verses and stanzas are organized radially in a sunburst, while the current line shows on the right.

  • Epic Shuffle
    Have you ever wished you could shuffle Rdio’s entire catalog? Well, you’re in luck, because Epic Shuffle is an iPhone app that does exactly that! Using a cryptographically safe random number generator, the app pumps out a completely random stream of tracks, with absolutely zero guarantee of cohesion from one track to the next.

  • Linkfire
    The Linkfire team is working on a musical web widget / link aggregator for the tweeting and the blogging. For Music Hack Day, they incorporated into their widget the Rdio API for playback, and musiXmatch for lyrics.

See the whole list on Hacker League.

∞  October 15, 2014 — 12:01AM

Posted by Kevin Nelson at 12:01AM in Events |


Recap: Rdio Internal Hack Day 10

Every quarter Rdio takes two days to let engineering and design team's creative side run wild with an internal hack day. The team builds prototypes in two days, skipping most of our normal engineering process. None of these projects are ready to be deployed but, some of these features may make it onto our road map.

We enjoy these hack days as a chance to work with folks outside our team, in parts of the code we normally don't get a chance to, and exploring crazy silly ideas.

Checkout the list of projects from Rdio Hack Day 10:

  • Rdio Scratch
    Sometimes simply pausing a track isn't enough. Add this bookmarklet to your browser and click on it the next time you're listening to Rdio.

Nearby Concerts Screenshot

  • Nearby Concerts
    A new Home story that shows you upcoming concerts in your area. Lets you listen to the artist's station and has a link to buy tickets.

iOS 8 Notification Center Widget Screenshot

  • iOS 8 Notification Center Widget
    Adds an Rdio widget to the new iOS Notification Center. Displays a selection of your recently played albums and stations so you can easily start listening. Also contains a quick launch bar letting you easily jump to You FM, Favorites, Playlists, and Search.

  • iOS 8 Notification Actions
    Added a play notification action so you can start listening without switching applications.

  • Custom Homepage
    Rather than using Home as your default landing page, lets you pick something else such as Favorites, Trending, or New Releases.

  • Review Flagging
    See an inappropriate review on Rdio? This hack added a button to send the review to the support team.

  • Playlist Watching
    Receive a notifications whenever a track is added to a playlist you're subscribed to.

  • Precache
    This hack pre-calculates certain requests before they are needed. This resulted in faster response times when the user actually needed it.

  • Rdio Lite
    A fresh implementation of the Rdio web client using React, JSX, and ECMAScript 6.


  • Rdioke
    A simple and well designed karaoke player. Search is limited to karaoke albums.

  • Logstash
    A test of using Logstash, Elastic Search, and Kibana to aggregate and analyze server logs.

  • Audio Preview
    Sometimes you want to sample a song without adding it to your queue. This web client hack lets you preview songs by hovering over artwork in Home, Trending, and New Releases.

  • Multi-select Tracks
    Sometimes you want to add multiple tracks to your queue or to a playlist. Works using the standard ctl+click and shift+click actions.

  • Soundtrack to Right Now
    A new Home story that uses your location, the time of day, and the weather to suggest stations to listen to.

  • Share Replies
    Allows you to converse back and forth with your friends when you share content with them.

  • Bandito
    A system that uses the multi-armed bandit algorithm to run tests.

  • Vagrant Up
    Launch a fully configured Rdio development environment with a simple vagrant up.

∞  October 08, 2014 — 9:00AM

Posted by Devin Sevilla at 9:00AM in Events |