Singer Justin Timberlake thrilled staff at a bar in Germany by leaving a tip of $3,920 after a night out.

Timberlake, who is in Cologne, Germany as part of his ongoing European tour, was partying with friends at the Crystal Cologne nightclub following a personal invitation from the owner.

The group left in the early hours of the morning after enjoying drinks on the house, and Timberlake showed his gratitude to staff by leaving a generous $3,920 tip, reports contactmusic.com.

"He was in a great mood, a real gentleman,` said the venue's owner, Yunus Arslan.