Mumford & Sons turned their Madison Square Garden show into a celebrity-filled event on August 11, with surprise appearances by Jason Sudeikis and Oscar Isaac. According to Spin, Sudeikis joined frontman Marcus Mumford for a live rendition of the “Ted Lasso” theme song, while Isaac later emerged for the band’s debut performance of “Dink’s Song (Fare Thee Well).”
The collaborations highlight Mumford & Sons’ deep connections to both film and television projects, as well as their penchant for unexpected live moments. As JamBase reports, the New York show was the first of three at the famed venue, part of the band’s ongoing Prizefighter Tour which includes two upcoming Southern California dates.
Star-Studded Collaborations
The surprise appearances carried significant personal and professional history. Sudeikis and Mumford have collaborated extensively on the “Ted Lasso” series, with Mumford contributing multiple compositions including the Emmy-nominated theme song. Per JamBase, the actor even playfully slapped band member Ben Lovett on the rear during the performance before returning to the audience.
Later in the evening, Oscar Isaac joined for “Dink’s Song (Fare Thee Well),” marking the first time Mumford & Sons have performed the track live. The song originally appeared on the Inside Llewyn Davis soundtrack, where both Mumford and Isaac contributed performances. The evening also featured guest appearances by opening act Medium Build and violinist Rob Moose, who has been augmenting the band’s sound with new string arrangements throughout the tour.
SoCal Connection
Southern California fans won’t have to wonder if similar surprises might occur locally—Kia Forum in Inglewood has confirmed dates for October 6 and 7, 2026. The arena shows represent the band’s only Southern California stops on the current tour, making them highly anticipated events for local fans.
Given Mumford & Sons’ history of bringing special guests onstage in major markets, and the band’s connections to both Hollywood and the music industry, the Forum shows could potentially feature similar surprise appearances. The band has frequently incorporated guest musicians and celebrity friends into their Southern California performances throughout their career.
The Prizefighter Tour continues through October 8, with the Kia Forum dates serving as among the final stops. Tickets for both nights are available through official channels, though fans should act quickly given the band’s strong Southern California following and the limited number of local dates.
Last updated August 13, 2026.
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