I stopped speaking for about a minute while the sound technician brought up the music to teeth-rattling volume.

A faster, more rhythmic piece would introduce levels of difficulty both for the singers and for the sound technician tasked with melding these atomised voices.

Unbeknownst to him, the music bar's sound technician recorded the performances, capturing relaxed live shows.

Later he worked as a sound technician, eventually becoming head of a recording studio for radio and television.

To this end, a professional sound technician was hired to design the interior.