Range of notes in Tosca, Les Miserables, etc. (5)
I believe the answer is:
scale
'range of notes' is the definition.
(musical scale)
'tosca les miserables etc' is the wordplay.
'SCALE' is hidden within the letters.
However, I'm uncertain how the hidden word is indicated.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for scale that I've seen before include "Measure" , "Relative extent as of laces" , "Climb, or series of notes in music" , "Horny plate; balance" , "Doh, ray, me" .)