Evan Parker was a pivotal figure in the development of European free jazz and free improvisation and was born in 1944 and started playing with Spontaneous Music Ensemble in 1967 and played with them until 1969. Parker met Derek Bailey in this group and they formed the duo Music Improvisation Company in 1968. In 1970 Parker, Bailey and Tony Oxley started the highly influential Incus Records. Evan Parker has played with a wide range of musicians both in the jazz world and in the "pop" world. He has played with Peter Brötzmann (among others on his seminal Machine Gun from 1968), Keith Rowe, Joe McPhee, Paul Lytton, Paul Lovens, Anthony Braxton, Cecil Taylor and Thurston Moore. He has also played on "pop" albums with artists such as Spiritualized, Robert Wyatt as well as on Scott Walker's Climate of Hunter.

Brewery Tap is the first duo recording of Evan Parker and Norwegian bassist Ingebrigt Håker Flaten. The recordings were recorded live at Oslo Jazzfestival the 13th of August 2007 at the Belleville venue.