It’s not the ball drop, but for tens of thousands of people, Phish’s annual run of shows at Madison Square Garden, which winds up on New Year’s Eve, is the more significant year-end event in Manhattan. Always an immediate sellout (but still available for pay per view at livephish.com), the concerts are both a tradition and a challenge. Phish has to provide its familiar joys but vary them enough to surprise fans who are obsessively meticulous tabulators.

Thursday night’s concert was Phish in crowd-pleasing mode: uptempo, playing familiar songs and ready to keep fans dancing — never getting too abstract or experimental. Its two sets were both CD-length, just under 80 minutes each, with the Rolling Stones’ “Loving Cup” as a splashy, gospelly encore.

This was the Phish that’s so light-fingered that its remarkable musicianship is often taken for granted; after all, things just keep bubbling along. The camaraderie of musicians who have been playing together since 1983 (with two major breaks) was acted out in the way each player’s improvisations peeked out and then tucked themselves back into the band.