Anontune was a proposal for a "fault-tolerant and open platform for social music" from #Anonymous. Its beta implementation allowed users to create playlists of song titles which were playable through Anontune's music engine. Since the music engine worked by searching other networks like #YouTube these playlists could then be shared without sharing any actual music. Thus Anontune's music engine was more like a #clientside #metasearchEngine than any #previousSystems.