"Frontier Psychiatrist" is a song by Australian electronic music group The Avalanches. The song was produced by group members Robbie Chater and Darren Seltmann, under their production alias Bobbydazzler, for the group's debut album Since I Left You. The song is built around many sampled elements, much like other tracks from its parent album, including prominent vocal samples of the sketch "Frontier Psychiatrist" by comedy duo Wayne and Shuster, and an orchestral background sourced from an Enoch Light version of the composition "My Way of Life" (1968).

It was released on 21 August 2000 as the second single from Since I Left You. Upon release, it peaked at number 18 on the UK Singles Chart and number 49 in the group's native Australia, becoming their first single to enjoy commercial success. "Frontier Psychiatrist" was well received by music critics, who praised the Avalanches' utilization of samples in making the song.

According to group members, "Frontier Psychiatrist" was not planned beforehand by the group and in his words, "happened from us just messing around." Group members Robbie Chater and Darren Seltmann were driving figures in the production of the album's songs, spending months scouring Melbourne's "old record stores for old records" and spending hours sampling music from the records they found to create the songs on the album. The duo primarily worked with a Yamaha Promix 01 and Akai S2000 samplers. Dexter Fabay, turntablist and keyboardist for the band, brainstormed the idea for "Frontier Psychiatrist", and his scratching abilities are heard prominently on the song.

"Frontier Psychiatrist" is built around several elements sampled from other music; Chater and Seltmann, who produced the song, sampled music from several vinyl records in the production and creation of the songs from Since I Left You. The song also makes prominent use of scratching done by the band's turntablist Dexter Fabay.

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