“Sing a Song All Night Long” arrives at UBS Arena as a live Rock/Pop bill anchored by Lionel Richie and Earth, Wind & Fire. Framed as an arena concert event, it leans on two catalogs that helped define Black American crossover pop and funk on New York radio and in the city’s larger nightlife economy. If there is NYC premiere history, it is less a debut than a return to a market that helped turn touring acts into national fixtures. The evening’s meaning sits in continuity: songs built for dance floors now scaled to a suburban arena.