There is also a ney or nay, an Egyptian flute
but Q....
Now....this is also known as Yang-Qin, or Chinese hammered dulcimer, but Qin and Yang-Qin are both acceptable terms. There, a free "y".
Good one Clary. I almost thought there wasn't an instrument that started with "R".
Saxophone
Y is difficult but there is an ancient Austrian instrument little known outside Austria.
Yodel-horn
Hmm...lets try sea-faring birds.
Albatross
That's a tough one.
Bonxie (Great Skua)