A game with a purpose for annotating Greek folk music in a web content management system

A web content management system (Web CMS) has been developed to host a corpus of 405 folk songs for media sharing. It is based on Drupal 7. Exploring various modules, the system offers multiple functionalities, including user registration, layered information about each song in different pages, similar content search, friendship relationships between the registered users, favorite lists, etc. Users can visit song pages, listen to the songs, and provide feedback. In addition to the Web CMS, a game with a purpose (GWAP), called Erasitechnis GWAP, has been designed and deployed on Facebook as an enjoyable way encouraging users to enroll and provide music annotations. Erasitechnis GWAP is a combined approach of existing games with a purpose, which focuses on tagging Greek folk music promoting less frequent tags. By doing so, descriptive tags are collected enabling the creation of a fully annotated dataset, which is exploited to train recommendation or autotagging systems.