Before using any of The Universal Scrobbler's tools, you need to

Scrobble manually in bulk

Here you can manually copy & paste a large list of track information to manually scrobble in bulk.

Information must be strictly in CSV structure, with each row in the format "{artist}", "{track}", "{album}", "{timestamp}", "{album artist}", "{duration}" (e.g. "Jeff Buckley", "Last Goodbye", "Grace", "2016-01-26 15:35:55", "Jeff Buckley", "275"). Only "artist" and "track" are mandatory. Duration should be in seconds. Do not include a header row.

Bulk scrobbles will be reverse timestamped according to duration, finishing with the current timestamp. If duration is not specified for a track, 3 minute track length is assumed.