Bulk re-scrobble multiple tracks to a different artist/track name from your library page (no Pro required, 14-day limit)
Remap multiple scrobbles to a different artist/track name directly from your Last.fm library. No Last.fm Pro subscription required.
This script allows you to change the artist and/or track name of multiple scrobbles at once. It works by creating new scrobbles with the correct metadata and deleting the old ones, preserving the original timestamps.
https://www.last.fm/user/YOUR_USERNAME/library/music/ARTIST/_/TRACK