The Quart Festival in 1996 was four days long. A lot of cool artists played, but what I believe is the lineup for Beck's day (July 3) is below.
Also apparently the show was webcast, which is amazingly early for streaming something, but I guess this was recorded and someone out there must have it somewhere.
[people and bands
Bass: Justin Meldal-Johnsen
Drums: Joey Waronker
Guitar: Beck Hansen
Guitar (Electric): Smokey Hormel
Headliner: Black Grape, Coolio, Leftfield, Massive Attack, Ministry, Nick Cave and the Bad Seeds, Orbital, Pulp
Keyboard / Synthesizer: Theo Mondle
Other Band: Dog Eat Dog, Fun Lovin' Criminals, Leftfield, Nicolette, Pulp, Turboneger, Underworld
Vocals: Beck Hansen