jazzbo couldn't be more right, I'm working on my first real transcription right now(off the top-bela fleck) And it's a fairly simple song, but it's still so helpful to see the way that the melodies relate to the scales, to the chords, and to my instrument!
although I'm doing it in treble clef right now, I'll probably add the bass part later.
A word on transcribing, it can be very hard at first, and you may not be very satisfied with your results, but don't get discouraged, if you keep at it it will start to get easier, eventually I hope that if I keep it up I'll get to the point where I don't need to hear it, play it on my bass, then pick it apart on the chart, I want to remove the middle man(my bass) and just hear things and be able to know how to write them down, but I'm probably a loooooooooong way from that, oh well, it's something to aim for I guess.