Dear Mr. Parker,
if ANYthing did the "Life of David Gale" harm - apart from a script/story which is, unfortunately, too disbelievable for words - it is your 'kitsch'music!
WHY, oh why, did you think you had to 'over-stress' feelings that the film-lover's mind feels anywhy?! Less (orchestrated, Mahler-like stuff) would, in this case, have been SO much more! (Have you ever come across the music of the wonderful Alfred Schnittke?)
Luckily, wonderful actors and actresses were involved - and saved, so to speak, the scene.