Balloon Popping meter: as the children sing well, a leader pulls on the ribbon from behind. If the kids have mastered a song, the balloon makes it to the top, where it is popped. If all the songs are mastered, the kids get tootsie "pops.
Put word stars on the ceiling and play "I Spy" with flashlights. Challenge the children to find the star that matches your clue. I think this would make a great idea for site words - have them find the site word that matches the one they draw out of a jar
I learned to read music at It's always been second nature. Here's a simple chart showing how to read music for piano. The treble clef is played with right hand, bass clef with left hand (except in special circumstances).