Columbia subject headings:
Improvisation (Acting) in literature--Congresses.
Improvisation (Acting)--Congresses.
Improvisation (Music)--Congresses.
Improvisation in art--Congresses.
Improvisation in dance--Congresses.
Performing arts--Congresses.
Harvard subject headings:
Improvisation (Acting) in literature--Congresses.
Improvisation (Acting)--Congresses.
Improvisation (Music)--Congresses.
Improvisation in art--Congresses.
Improvisation in dance--Congresses.
Performing arts--Congresses.
Princeton subject headings: