soundcheck

Short definition from Wiktionary

Noun

1. 1
   An activity that takes place before a concert, etc., when the performer and sound crew run through a small portion of the upcoming show on the venue's sound system to verify the volume and tonal frequencies.

Verb

1. 1
   To carry out a soundcheck.
2. 2
   To perform (a song etc.) as part of a soundcheck.