What is "soundcheck"

n. 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.

A soundcheck is the preparation that takes place before a concert, speech, or similar performance, when the performer and the sound crew run through a small portion of the upcoming show on the venue's sound system to make sure that the sound in the venue's " Front Of House" (FOH) and stage monitor sound systems is clear and at the right volume and tonal frequencies. Soundchecks are especially important for popular and other musical genres that use heavily amplified PA systems; having correct sound is crucial to the success of such events. A soundcheck remains a difficult science, because the acoustics of a venue often change somewhat once it is filled with an audience.

Soundcheck is a talk radio program about music and the arts hosted by John Schaefer. It is produced by WNYC-FM, New York Public Radio. From 2002 to 2012, the show aired at 2 p.m. ET on 93.9 FM in New York City and on XM Satellite Radio Channel 133. The show underwent a summer hiatus from the airwaves in May 2012, and returned in September of that year.

Soundcheck is the thirty-third album by Finnish experimental rock band Circle.

It was issued as a limited edition vinyl LP by Full Contact in 2009. It was recorded on 31 October 2009 in Lahti, Finland. The core four-piece Circle line-up is joined by sound engineer Tuomas Laurila who supplies effects and the original live sound mix, and guitarist brothers Julius and Pekka Jääskeläinen, creating a dense, guitar-heavy sound.

Soundcheck is one of a series of vinyl-only albums released by Circle which document their often improvised freeform live shows.