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 am not sure how this is indicated.
'in' is the 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" .)