Understand AIE vs AGEDI
Spanish neighbouring rights are split between two societies:
If you are an independent artist who owns your masters, you are both performer and producer — register with AIE for the performer share and AGEDI for the producer share to collect 100%.
Self-releasing Spanish artists who register only with AIE collect only the performer half. The producer share collected by AGEDI is forfeited unless you register as a producer.
Assuming AIE covers everything. AIE is performers only — the producer/master share is a separate registration with AGEDI.