Would i be overwhelming my child by sending him to enrichment class (Music Class, Gym Class ) at such a young age?

Kids love music and classes are designed to be age appropriate so for younger ones it's adult accompanied, for toddlers it's adukt accompanied and some of them even have fun activities so restless toddlers can move around. I wouldn't worry about it being too early. Some people even expose their kids to music in their womb!