“Love & Life” lands at SummerStage as a live program built around the friction between private feeling and public sound. The lineup moves across pop, rock, and electronic worlds, with sets by Yellowcard, Plain White T’s, Diana Ross, Of the Trees, and Jade Cicada. In New York City, that range reads as a small portrait of the city’s listening habits, where generations share the same lawn and the same night air. One clear takeaway is how SummerStage turns genre into a common language rather than a boundary.