I am a producer, mixer, or engineer for several big artists. How do I claim royalties for these recordings? 

SoundExchange collects performance royalties for Sound Recording Copyright Owners and Featured Artists. SoundExchange will only pay performance royalties to creative participants (producers, mixers, or engineers) when a direct registrant submits a SoundExchange Letter of Direction (LOD). The LOD instructs us to send a percentage of the artist’s royalties, for specific recordings, to the creative participant. LODs are not retroactive unless that is specifically indicated on the LOD. For more information and to download the relevant resources, visit our Useful Links section of this page