MusicPass is a bridge format used for the digital distribution of musical recordings, usually full albums or compilations. Each MusicPass card displays a PIN and serial number which are used to redeem MP3 files and, in some cases, video content from the MusicPass website.
History
MusicPass was developed by SONY BMG Music Entertainment in 2007 and introduced in January 2008.
References
MusicPass Wikipedia(Text) CC BY-SA