Misc: Which German city is associated with a round patty of minced beef served in a bun?

Questions

"In the evening, when the day is done"?

"Lots of people sitting on the grass with flowers in their heads said"?

"Lyin' cheatin' hurtin' thats all you seem to do"?

"Many times I've lied, and many times I've listened"?

"My, my, my, Im so happy, I'm gonna join the band"?