From http://www.dawn.com
Exerpt of the performance at Karchi with GoetheInstitut 2004
"Lenz and Berns delivered four more tunes, including a medley for the finale, before wrapping up and proceeding to dinner. In an impressive performance, Lenz showed he is an expressive player, while Berns, whom the pianist dubbed “one of Europe’s best bass players,” definitely proved his worth with elaborate note-playing, at times erasing the distinction between guitar and bass"
Read more here http://www.dawn.com/weekly/images/archive/041024/images7.htm