Two simultaneous release versions. This version is more rock-driven! - With the street racing film SPEED MASTER out in Japan, the theme song is getting two consecutive releases with 8-BALL feat. m.o.v.e - SPEED MASTER and m.o.v.e feat. 8-BALL - SPEED MASTER.Let me first emphasize that these two CD singles are two completely different CD single songs with the same title and the same artist.Both m.o.v.e and 8-BALL have been involved with the racing scene in Japan with 8-BALL being featured on several D-1 compilations and m.o.v.e featured on INITIAL D and also several racing compilations and also having its own drift car team via Team m.o.v.e.For the 8-BALL feat. m.o.v.e version, the collaboration is actually very awesome because you get a very rock and electric guitar driven track and its literally a duet between 8-BALL s KEIICHI and m.o.v.e s yuri and the music works in conjunction with motsu s rhymes.Of the various versions of SPEED MASTER featured on both CD singles, my favorite is the 8-BALL feat. m.o.v.e version because its a pretty cool rock song but those who miss the INITIAL D style of m.o.v.e music will want the m.o.v.e feat. 8-BALL CD single version.The CD single comes with an all English ballad by 8-BALL and two remix versions by KEIICHI and CHRIS. And in the remix department, I prefer the remixes by Dave Rodgers and remo-con on the m.o.v.e feat. 8-BALL CD single. This version is more rock-inspired remixes on this CD single while the other is more Eurobeat. The rock remixes are pretty cool but when it comes to m.o.v.e, I like getting that nostalgic feel of the INITIAL D Eurobeat years and you get that with their remixes on the other CD single.The DVD features the 8-BALL feat. m.o.v.e promotional video of STREET MASTER and the film s trailer.If you are a fan of 8-BALL or m.o.v.e, you really can t go wrong purchasing both. They are two collaborations that feature entirely different songs that have the same title.My preference for best SPEED MASTER goes to 8-BALL feat. m.o.v.e but on the remix end, I prefer the m.o.v.e feat. 8-BALL CD single.So, depending on your musical preference, go with 8-BALL feat. m.o.v.e if you want music that is more rock driven or m.o.v.e feat. 8-BALL for music that is more Eurobeat driven.Both are two energetic and enjoyable CD singles.