oboe
Oboe Ocarina Organ
piano
The oboe is a musical instrument. The organ is a musical instrument.
oboe ocarina
ostinato.
Organ Can't think of any others but I'm sure there are some. the Oboe is one
Banjo, Cello, Piano,
trombone
The musical opening is called an overture. It starts with the letter O.
An organ is a solid musical instrument. It begins with the letter o.
One such would be the ocarina, also known as the sweet potato.