Keith Jarrett recorded this live album at the Berlin Philharmonic, Germany, on July 28, 2001. It is a trio concert with Gary Peacock on double bass and Jack DeJohnette on drums.
The title references the Cole Porter song, but also alludes to the musicians' status as visitors in Berlin. The album was released in 2004 by ECM Records.
The performance captures the trio's spontaneous improvisation, blending standards and original compositions. It is regarded as a standout example of their early 2000s live work.