Adolescence /ˌæd

literature /ˈlɪt. ə r.ɪ.tʃə r / /ˈlɪt ̬.ɚ.ɪ.tʃɚ/ noun [ U ] WRITING
1. written artistic works, especially those with a high and lasting artistic value
classical/modern literature
'Wuthering Heights' is a classic of English literature.
mood /muːd/ noun [ C ]
the way you feel at a particular time
She's in a good/bad mood.
Her mood seemed to change during the course of the conversation.
The drink had put him in an amiable mood.
The public mood changed dramatically after the bombing.
The mood of the crowd suddenly turned (= The crowd suddenly became) aggressive.
musician /mjuːˈzɪʃ. ə n/ noun [ C ]
someone who is skilled in playing music, usually as their job
The concert features dancers, singers and musicians of all nationalities.
opera /ˈɒp. ə r.ə/ , /ˈɒp.rə/ /ˈɑː.pɚ.ə/ noun [ C or U ]
a musical play in which most of the words are sung, or plays and music of this type
'Carmen' is my favourite opera.
I've never been a huge fan of opera.
He goes to the opera (= to see an opera) whenever he can.
an opera singer
Compare operetta