Great,I love the first and second games,and sence I play multiplayer a lot i figured out a lot of them are resused or tuned,or at least use a similar rythm pattern,for instance 2-17 (multiplayer #1) is RF 1's menu music with added rifts,multiplay er 3 is one of RF 1's early mission BMG's with an longer into and combined with a RF1 multiplayer song,and as one other had said,there are a few arena songs missing,most notably one that is an exact copy from the first one,Two Ton Heavy Thing,wich plays at a high frequency,you can find it in the Red Faction track also on this site,....oh yeah GREAT game and GREAT soundtrack