Acoustic Guitar Heartbeat Shop. Acoustic Guitar Heartbeat Cool Design for Guitarists. A Funny Musician print. Great for classical and acoustic guitar players. This Original Old School design is the perfect product print for guitars fans.A Great products if you play musical instruments especially like acoustic guitars and you love music. Acoustic Guitar Heartbeat design Is Designed in different sizes for Men, Woman and Kids. This Funny print makes a great product for Music fans. Ideal for practice bands, Concerts and Music Festivals. Great if you love string instruments.