Affable, experienced and well liked by clients, Mr. Solomon has a leg up in the succession race whenever the bankâs chief executive, Lloyd C. Blankfein, leaves â as, of course, does the other co-president, Harvey M. Schwartz, Goldmanâs former chief financial officer.
Still, Mr. Solomonâs love of spinning music suggests a youthful, unguarded side that is rare in the wealthy, button-down world of high finance.
In recent years, he has performed regularly as a D.J., according to associates, mixing and tweaking electronic dance music for a live audience. It is the sort of pursuit that could inspire guffaws among the executiveâs 50-something peers while appealing to a younger generation of Wall Street talent that rejects the industryâs staid culture.
Mr. Solomonâs hobby has become a more or less monthly gig, with recent stops in New York, Miami and the Bahamas, all noted on the Instagram page. (Among the Manhattan venues where he has spun, according to the page, are Beautique in East Midtown and The Whales on Clinton Street.)
âDavidâs always believed that having a wide range of outside interests leads to a balanced life and makes for a better career,â said Jake Siewert, a Goldman spokesman. âHeâs preached that regularly to younger employees in the firm and tries to lead by example.â
Mr. Solomon led a study about improving the quality of life for Goldmanâs junior bankers that resulted in new curbs on the hours they could work on weekends.
Shortly after The New York Times called, the Instagram page was taken down.
But a roughly 30-second clip shot during the performance on July 4 depicts Mr. Solomon, wearing a baseball cap with headphones over it and a T-shirt bearing the name of Casamigos Tequila, adjusting the music as women in bikinis and shirtless men wearing board shorts dance on a deck below. Speakers blast music from the roof of the club, which was holding its weekly pig roast that day.
It appears that the sampling of music on the video â which Mr. Solomon promised in an Instagram post before the show would be “a great mixâ â is a clip from a track that someone else recorded, possibly âMissingâ by the group EDX.
Based on his social-media posts, Mr. Solomon wants to get more creative. In an April 11 post next to a picture of him in front of an elaborate indoor sound system, he writes: âStarting to play around with vinyl. Old school and lots to learn but very cool…â In the shot, he is dressed in black, except for a green wristwatch, and is surrounded by black-and-white photographs.
The performance at Nipperâs was not Mr. Solomonâs first outing in the Bahamas. In May, he posted a picture of himself spinning at the Bakerâs Bay Ocean & Golf Club on Great Guana Cay with the caption âRocking the Dune bar…â
Mr. Solomon has joined forces with some big names in the electronic-music business too. Earlier in the year, he performed several shows with the D.J. Liquid Todd, a SiriusXM radio personality. And Mr. Solomonâs Miami gig in March was part of the Paul Oakenfold Generations World Tour. Mr. Oakenfold, a Grammy-winning British D.J., helped popularize trance music in the 1990s.
Whatever Mr. Solomonâs Wall Street cohort thinks, his social-media followers seem to understand that spinning music means a lot to him. Responding to D-Solâs teaser post about the July 4 gig, an Instagram friend named @willmcdonough wrote, âThis should be the first line of your obituary in 50 years!!!!â