change pitch

If you create groove clips with the bassline, it might be possible to tune each one up by a few cents. Once you have one tuned, you can copy the fine pitch change from the Track Inspector > Clip > Groove Clip > Fine Pitch and paste that setting to all other clips, selecting all of them and pasting to the "Fine Pitch" field. This will set all the subsequent clips to the same pitch. I've never tried groove clipping an entire song, but I think it is probably better to make reasonably small, multiple-measure clips.