A Music Similarity Game Prototype Using the Casimir Api

We present a prototype of ”Spot the Odd Song Out” online game, which collects relative similarity judgements of users on triplets of clips. The game is based on the CASimIR API, which we currently develop, that supports the collection of other annotations the use of different client platforms, as well as the selection of music clips for presentation and user data storage. The API backend is extensible to multiple question types and scenarios and combines data from different applications. The current music database contains clips from MagnaTagATune and the Million Song Dataset . The game front-end is implemented as an HTML5 web application runnable on most of todays’ desktop PCs, tablets and smartphones. A version as a Facebook app is under development. The web application is built on a modular architecture, so that new modules for tasks such as tagging or tempo tapping can be easily integrated into the existing application.