Musica Relax Zen The works of geniuses like Puccini, however, are usually not the only real relaxing music. Even the upbeat songs of ABBA have benefits for instance controlling cortisol stages. Dr. Daniel Levitin, of McGill University in Canada, and colleagues mention this principle in a very 2013 assessment, citing https://www.youtube.com/watch?v=BkaFW11OGEs