Sir Mix-a-Lot performed 'Baby Got Back' with the Seattle Symphony Orchestra last Friday to the delight of his fans. A throng of thrilled ladies encircled the portly rapper while he sang the classic retro rap, which was a big hit back in the 1990s and has remained in the popular imagination ever since.

Before he performed, Sir Mix-a-Lot invited the audience to perform with him on the stage. He did not have to wait long as eager ladies went up the stage and started to wiggle their bums, almost bumping into each other in the process. A lady fan in a black dress turned her back to the audience, showing her butt and letting out some dance moves while the heavy-set rapper performed on stage.

The "hip hop sing" was arranged by the symphony orchestra who invited the 50-year-old singer from Seattle to join their 3rd Annual "Sonic Evolution project". The project hires musical composers to create an orchestral arrangement of popular songs with a Seattle association. DJ Gabriel Prokofiev was also featured in the Sonic Evolution concert held at Benaroya Hall, but Sir Mix-a-Lot was far and away the best part of the show.

In 1992, his "Baby Got Back" became the second best-selling song. It hit the number one position in the U.S. charts for five weeks, for which he was awarded the Best Rap Solo Performance by the Grammy Awards.

Sir Mix-a-Lot, whose real name is Anthony Ray, performed another hit song arranged by Gabriel Prokofiev entitled "Posse on Broadway". Directing the symphony was Ludovic Morlot, who was referred to both as "genius" and "the shiznit" by Sir Mix-A-Lot.

Acknowledging musical icons in Seattle is goal of the show, according to Ludovic Morlot, the musical director of the symphony orchestra. He also stated that it was initially arranged in order to launch three compositions created by young composers who were motivated by local blues, rock or hip-hop songs. "The whole thing to invite people on stage was totally unplanned," said Sir Mix-a-Lot. He said it was a totally spur-of-the-moment thing.