During this period Barbieri also made two other collaborative albums, one with his wife Suzanne J. Barbieri under the name Indigo Falls (1996), and one with Tim Bowness from the band No-Man titled Flame (1994).
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He has cited Karlheinz Stockhausen as a central influence, and his approach could also be compared to similar "non-virtuoso" art rock musicians such as Brian Eno.
Richard Barbieri - synthesisers, Hammond organ, Prophet V/System 700 electronics, piano, tapes, texture, sequencers
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Signify was the first Porcupine Tree album recorded as a full band unit, rather than primarily by frontman Steven Wilson with occasional assistance from other musicians, primarily the ones who would become full-time band members as of this album; Richard Barbieri, Colin Edwin, and Chris Maitland.
Richard Barbieri – analogue synthesizers, hammond organ, mellotron, piano on "Even Less", glockenspiel on "Pure Narcotic"
Richard Nixon | Richard Wagner | Richard Strauss | Richard Branson | Cliff Richard | Richard Gere | Richard Burton | Richard Hammond | Richard | Richard Dawkins | Little Richard | Richard Feynman | Richard Attenborough | Richard M. Daley | Richard I of England | Richard Thompson | Richard Francis Burton | Richard Thompson (musician) | Richard Pryor | Richard Linklater | Richard III of England | Richard Petty | Richard II | Richard II of England | Richard E. Byrd | Maurice Richard Arena | Muhal Richard Abrams | Richard Herring | Richard Wright | Richard Stallman |
It was the first time all four members of the band, David Sylvian, Steve Jansen, Mick Karn and Richard Barbieri, collaborated on a project since the compilation of the 1983 live album Oil on Canvas.