Is the MLC Matching Tool free?

Yes. Membership and the tools in the Member Hub and Songwriter Hub are free.

What is an ISRC and why does it matter?

An ISRC is the unique code for a sound recording. DSPs report usage by ISRC, so it is the most reliable way to tie a recording to a song.

Can I match a recording to a song I didn't write?

You should only suggest matches for songs you represent or have a clear connection to. The MLC reviews suggestions, and an incorrect match can delay payment for the real rightsholders.

Will matching pay me retroactively?

Matching applies to usage the MLC holds. Held royalties for matched usage are paid out to the claimed shares, subject to the MLC's processing and distribution schedule.