Per this thread here, there are variety of multi-tracks floating around that enable hearing the isolated bass parts without having to sift through the mix to hear what the notes are. Here is one for the synth bass part to Madonna's Lucky Star.
Example here.
The raw tracks are longer than the actual song, but they just keep repeating. The transcription follows the form of the released track.
Example here.
The raw tracks are longer than the actual song, but they just keep repeating. The transcription follows the form of the released track.