Baby and toddler music classes- How to find one that gives you maximum benefits

Wow - has anyone else noticed there are lots of new baby music classes popping up everywhere. When I started BLMF 8 years ago we were certainly a pioneer in this area. With so many competitors coming on to the market, I want to share what I believe is important in finding a baby or toddler music class. Free Trial class It is important to attend a free trial class. Quality of the teacher? Is the teacher a good singer?