Some people ask us for metal whistles. These are great if you have a group of over a hundred drummers. You lose the 3 tones, but you gain volume.For almost every samba band outside Brazil metal whistles are much too loud for the volume of the band.

For a smaller samba band TDSounds' wooden samba whistles are quite loud enough for everyone to hear them. And they have the advantage of having three tones, so you can improvise as well as just signal.