I was hoping I could use them while strumming my guitar but it doesn't keep a good rhythm with the movement of the hand. They work a little better while playing bongos. If I could change the design to work better, I would make the material a little lighter just like those egg shaped shakers. That gives it a higher pitch sound. I would also play with the shape of it, so as to make a more even movement of the beads inside flow more evenly and produce a shorter sound. When it comes to shakers or maracas, you don't want the beads to bounce inside and prolong the sound of it.