Bob and Mike Bryan entertained a crowd of more than 500 people in the public hospitality marquee at the Qi Zhong Stadium, home to Tennis Masters Cup Shanghai, on Wednesday.

Bob, on the keyboards, and guitar-playing Mike performed seven songs including ‘Let it Be’, ‘Mustang Sally’ and ‘Wonderwall’.

The South Californian twins need to beat Paul Hanley and Kevin Ullyett in their final round robin match of the gold group on Thursday in order to qualify for the semifinals. They won the Tennis Masters Cup title in 2003 and 2004 when the circuit-ending event was held in Houston.

Round Robin Groupings & Results

The Bryans are already assured of finishing the year as the No. 1 team in the Stanford ATP Doubles Race for the third time in the past four years.

The 28-year-olds completed the career Grand Slam in 2006 with titles at the Australian Open and Wimbledon.