Musically , the work makes extensive use of twelve - tone technique .
Musically , the work expresses debts to Berg 's Wozzeck , such as in the shared name of the principal female role ( Marie ) and in the number of scenes ( 15 ) .
Musically , the work makes extensive use of twelve - tone technique , and expresses debts to Berg 's Wozzeck , such as in the shared name of the principal female role ( Marie ) and in the number of scenes ( 15 ) .