Yamaha b1 upright pianoIntroducing the Yamaha b1 Upright Piano The b1 is a fantastic option for those who are restricted in terms of space and budget, but do not want to compromise when it comes to enjoying the authentic sound and touch of a real piano. Designed for modern day living, the b1 is the most compact of the b Series pianos, being only 109cm tall, and yet still providing a clear and beautiful tone that is particularly appealing for beginner to intermediate level