The S4 League OST is made up by original songs composed by Bexter, Planetboom and Forte Escape. Said compositions were released in an album officially named Vivace on March 28, 2008. A later updated sound track was released under the name S4 Leagers Supersonic. This was a special 2-year anniversary collector's edition soundtrack. This soundtrack was given out for free in limited numbers during an event (event name needed). This soundtrack came in 2-discs. The first disc contains all of the music up until the Chaser Update. Disc 2 contained a promotional Video used during S4 League promotion period, and a copy of the S4 League client. It was released sometime during December 2009.