This and the next night are two semi-related but separate giant multi-day festivals in Germany. They basically had the same lineup.
Beck was on the same stage/lineup headlined by Aerosmith, along with some other acts like Bush and The Fugees.
[people and bands
Bass: Justin Meldal-Johnsen
Drums: Joey Waronker
Guitar: Beck Hansen
Guitar (Electric): Smokey Hormel
Headliner: Aerosmith, KISS, Supertramp
Keyboard / Synthesizer: Theo Mondle
Other Band: Bush, Caroline's Spine, Kula Shaker, Ocean Colour Scene, Sabrina Setlur, Sovory, The Fugees
Saxophone (Alto): David Brown
Trombone: David Ralicke
Turntables: DJ Swamp
Vocals: Beck Hansen