My kids both had group lessons with a local teacher, sort of Kodaly or Orff jumbled with her experience of several years of what worked. It was a very relaxed setting in her own home with the parents with the kids or just in the next room drinking tea. They danced, they sang simple tunes, they played games, she would play music on her piano and they would move around the room in time to the music. They loved it! They learned ta ta ti ti rhythms, when he first got the idea of it my 4 year old son wanted me to write out as many as I could on cards so he could keep practicing. Last year when he was just turned 8 he auditioned for the local children's choir, his vocal range wasn't great but when the conductor tapped out a rhythm he clapped it straight back at her without any mistakes, even when the rhythms got harder. His younger sister will be auditioning this fall and will probably do as well if not better.