Depends. How much do you hate Big's fishing music or the countdown theme? Add to that it is for a less pivotal situation (how many bother wacking ZERO senseless until he turns invincible rather than just trying to get through the level?). Makes sense I suppose. That said the music never really fit perfectly with some of the cutscenes anyway (par some exceptions, notice how Theme of E-102 syncs perfectly with Amy's prison cutscene for example). The most ideal situation would be having loads of different arrangements for the tunes played to sync with the actions like in SA2, though I don't know how much effort that would require.