The trombone ranks among a handful of instruments that sound most like the human voice—it represents the adults in “Peanuts,” after all. Cartoons aside, the trombone’s tenor range sits in a natural ...

As you can imagine, simulating a human mouth is a daunting task and the number of variables meant that [iSax] ended up with something only vaguely trombone-like. While ultimately it didn’t turn ...