Jag går i kloster (I enter a monastery)[n 1] is a two-act operetta by Franz Berwald, to a libretto by the composer and Herman Sätherberg.
Composition was begun during a six-month stay in Nyköping in 1842, and although excerpts were played at a concert at the Stora Börssalen (Great Hall of the Exchange), Stockholm in December 1842, the operetta was first performed complete at the Royal Swedish Opera, Stockholm on 2 December 1843[5] on the same evening as Berwald’s Sinfonie sérieuse, and had five performances in that run.
[7] A full score was published in 2007 as volume 19 of a complete Berwald edition from Bärenreiter[8] The first scene is set in the park of the greedy fortune-seeking lawyer Clermont (bass), guardian of the beautiful Julie (soprano).
A handsome officer, Sansdoute (baritone), a childhood friend of the heroine, and his valet (bass) jump over the wall into the grounds to find Julie.
He wins her over, and the two other men must be content with the outcome - Clermont prepares the marriage contract with favourable financial terms and Charles creates an ode for the ceremony.