Sometimes a musical artist (singer/band) will release a song on a "single". A single is a CD that only has a few songs on it. (usually 2-4) Sometimes the musical artist will record a different version for the album (像片簿). This will be called the album version (像片簿的版本）Usually albums have 10-20+ songs.
Sometimes a musical artist will also record a radio version of the song. Often the radio version is not as long (maybe < 3 mins)
Sometimes a musical artist will also record a radio version of the song. Often the radio version is not as long (maybe < 3 mins)