The Master's Voice is the second album by American improvisational band Unknown Instructors.

[3] The core quartet of Mike Watt (The Minutemen, fIREHOSE, The Stooges, Dos, Banyan),[4] George Hurley (The Minutemen, Firehose, Red Krayola),[5] Joe Baiza (Saccharine Trust, Universal Congress Of),[2] and poet/saxophonist Dan McGuire reconvene on the album,[2] with guest vocals on three tracks by David Thomas (Pere Ubu)[2] and on another track by artist Raymond Pettibon.

The album was recorded at Total Access Studio in Redondo Beach, California,[6] the same studio where Black Flag recorded many of their classic mid-'80s album releases and where Watt and Hurley's The Minutemen had recorded Project: Mersh in 1985.

According to Dan McGuire, the previous album The Ways Things Work was recorded in one day and came off jazzier because of it.

[2] With the rhythm section more familiar now, McGuire wanted a harder edged album this time.