Complex sentence: Music from the NBC Television Event is a soundtrack for "The Sound of Music Live!" that was released on December 3,2013 by Sony Masterworks and includes studio recordings of songs that were later performed live during the broadcast.
Split into simpler sentences: Music from the NBC Television Event is a soundtrack for "The Sound of Music Live!" that was released on December 3,2013. The soundtrack, released by Sony Masterworks, includes studio recordings of songs that were later performed live during the broadcast.