Music in reverse literally...sucks!
Its like hearing sucking sounds laid on top of sucking sounds. Most sounds known to mankind consist of two parts: an "attack", and a "decay" ( the initial sound, and its disappation). So when you run a recording backward you hear a reverse decay, and then the attack. So you get a hiss that amplifies to a strong sound that then abruptly stops ( hense a suction sound). For a brief passage music played in reverse can make for an interesting effect. But I dont see how one could sit through a whole song hearing it.
Though the Japanese language may sound better in reverse than does English. Thats because Japanese words are always vowel-consonant-vowel-consonant.
When they adopt an American English word they refashion it into that way: so "baseball" becomes "basahburu". So played in reverse it would be urubasab. In contrast in reversed English it would be "lobsab" (urubasab is easier on both the tongue and the ear than lobsab).