1. Hopsie's Song 2. The Flower Song 3. The Strawberry Song 4. Mountain Climbing 5. Butterfly 6. Dance of a Little Bird 7. Cuckoo 8. Camptown Races 9. Jump! 10. Frog Chorus 11. Snowy Night 12. Twinkle Twinkle Little Star
"A Guide to the Casio Keyboard" "Music for Little Ones" "Let's Play the PT-80"
Supplied with stickers for the PT-80 to help children use the ROM and booklet.
I suspect this ROM may have been available only in Australia. RO-164 appears to be the Japanese version.