Piano Party is the core book at all four levels of the Bastiens' Invitation to Music Series (A, B, C, D); new concepts are introduced in the Piano Party books. Along with Piano Party, the companion books, Theory & Ear Training Party and Performance Party, provide the formula for a well-balanced music education. Colorful illustrations in all the books are used to reinforce concepts and styles, to maintain interest, and to motivate. Book C presents pieces written on the grand staff with an emphasis on reading steps and skips before intervals of 4ths and 5ths are introduced. Slurs, ties, forte, piano, and 2/4, 3/4, 4/4 concepts are mastered. Students read from bass clef low F to treble clef high G in the positions of C, G, F (Group 1), and Middle C position.