I'm trying to compress some music cd's to MP3, but the audio backgrounds suc#ks a little. Is not as pure as the original CD, even encoding in 384kbps.

Is there any way to preserve the backgrounds fidelity as the original source, with a low bitrate ?

Wich MP3 encoder is good to do this ?, cause any MP3 encoder is great for normal purpouse , but when removing vocals from these MP3, i get percussions with horrible fidelity in the backgrounds.