text: how do i find out what type of clarinet i have.? i havent played in 5 years and im 18 now. i would like to start back playing but i forgot what kind of clarinet i have. is it an eb, alto, what i forgot. help in all probability it would be a b flat clarinet, the most widely used instrument. if you have access to a piano or keyboard you can check by blowing a note on it without putting any fingers over the holes. if this note corresponds to an f on the keyboard then you have yourself a b flat clarinet.