Similar to an Oboe, but With a Single Reed
Puzzle 18 of Tennis Medium Pack
Question is: Similar to an Oboe, but With a Single Reed
and the answer is: CLARINET
Word Meaning:
CLARINET — (music) A woodwind musical instrument that has a distinctive liquid tone whose characteristics vary among its three registers: chalumeau (low), clarion (medium), and altissimo (high).
Definitions from Wiktionary.