Is it true, or am I having my finger pulled? A Frenchman by the name of Lapoofe had a talent where he could?

swallow gulps air and by flatulence play a tune ot of his behind. It is said that he would go to the courts of royalty to perform this oddity' It was well past April fools day when I heard this over an NPR call in show. I consider this just weird enough to be true!