Music, Art and Process Institute proposes the following two links: 

Metáfora: Centre of Art Therapy Studies that has the aim to spread, introduce and standardize the practice of the Art Therapy in Spain. It offers three different services: 

1.- Information and Research Service .
2.- Therapeutic Intervention Service.
3.- Educational Service.

Music Therapy World. This is the most complete and actual European website about music therapy. It allows the access to an extensive music therapy data base.