This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Saxtubaharmonicseries.svg en The harmonic series of the saxtuba Own Erigena File Saxotrombaharmonics svg SVG musical notation Saxtuba Brass instruments Harmonic series
Page 2023 Free-images.com. All images are Public Domain