sitzprobe

Etymology
Borrowed from. From.

Noun

 * 1) The first run-through of an opera or musical in which the orchestra and singers rehearse together, covering only those portions of the piece in which the orchestra plays, and in which the singers sit or stand at microphones, but do not block out any action.

Usage notes
Some people consider only the lower case version of this term to be proper English, and consider any upper case version (other than at the start of a sentence or in a title) to be a German word.