TCT01 - Celebrate Theory - The Royal Conservatory - Level 1 Paperback – 1 Jan. 2016

I have ordered a music theory book and its used , all the questions is filled with answer with pencil . Im going to return it back although its erasable but since i have bought it for $30 and it was not discounted so ill return it back

Expensive for the number of pieces featured.

Very helpful for both beginner in piano, and also as a refresher. A go-to book for sure.