"The Sound of Music" range (4)
I believe the answer is:
alps
'the sound of music range' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for alps that I've seen before include "Mont Blanc mountains" , "With pals in great mountains" , "Laps around mountains" , "Mountains in Central Europe" , "Mountain system in south-central Europe" .)