First in line, yet can't even understand musical theatre (6)
I believe the answer is:
lyceum
'theatre' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe there's an association between them I don't understand?
'first in line yet can't even understand musical' is the wordplay.
'first in' indicates taking the first letters.
The first letters of 'line yet cant even understand musical' is 'LYCEUM'.
Can you help me to learn more?
(Other definitions for lyceum that I've seen before include "My clue (anag)" , "Where in Athens Aristotle taught philosophy" , "Aristotle's teaching place" , "French school or concert-hall" , "Athenian garden where Aristotle taught" .)