Tambourine would be one musical instrument that begins with a t.
Chimes ...
The jug is a musical instrument. It begins with the letter J.
Xylophone is a musical instrument. It begins with X.
The tambourine is a musical sound. It begins with the letter t.
Whistle and washboard are musical instruments.
The Alpenhorn the accordion Autoharp alto sax
TrumpetTubaTromboneTriangleTin Whistle
TLC, Train
trombone,tangerine and trumpet
Banjo is a musical instrument. It begins with the letter B.
Tommy Dorsey Orchestra is a musical band. It begins with T.
lyre lute