Enjoying music is unlikely to have "evolved" since there would be no pressure for that trait to survive in terms of survival or reproduction. Hedonism and pleasure are emotive terms but many animals from rodents upwards will do things to get a reward and in some cases definitely seems to “enjoy” an activity. Similarly, many birds when they sing, activate a whole range of neurons and nucleii in their brains which in turn triggers a diverse range of activities including reproduction. Ir would therefore not seem unreasonable to conclude that birds "enjoy" singing. Humans exhibit a more extreme form of that but that does not mean there is any evolutionary pressure for that ability to be maintained.