PITTSBURGH — After every Mets home win, the players pour into the clubhouse, bobbing their heads as the hip-hop song “Get Like Me,” by David Banner, thumps through the speakers. For 15 minutes, music blares and the mood is light. Then the clubhouse is opened to the news media, and the players go their separate ways.

Chris Young coordinates the party. He is the Mets’ unofficial disc jockey, meaning he puts on music before most games and after the Mets win. It is a role he takes seriously and, his teammates say, is quite good at. In his tumultuous first season with the Mets, this is how Young has found a way to fit in.

Last off-season, perhaps unknown to the Mets’ front office, the position was open and still somewhat undefined. From 2005 to 2008, the team’s manager at the time, Willie Randolph, apparently influenced by his years as a Yankee, did not allow music in the clubhouse, said David Wright, the longest-tenured Met.

Under Randolph’s successor, Jerry Manuel, the ban was lifted, and it has remained that way during Terry Collins’s tenure. Jose Reyes, now with Toronto, used to play music at his locker, Wright said. Justin Turner, a backup infielder, then took over the job without any official designation. He seemed to be well liked in the clubhouse, but the Mets let him go in the off-season; he signed with the Los Angeles Dodgers.