The Grizzly Bear-curated All Tomorrow’s Parties event has been postponed until November 2. The London event was slated to take place on May 5. Van Dyke Parks, the Walkmen, Tortoise, Real Estate, I Break Horses and Cass McCombs were among the acts slated to perform.

A note on the festival’s website explains, “The main reason for this is that two of the anticipated headliners pulled out — making this day’s event unviable at this current stage, and rather than putting on a day that isn’t worthy of our headliners and of the standard of ATP events, ATP and Grizzly Bear have decided that rather than cancelling, their show will be moved.”

Tickets for the original date will be honored on November 2, and refunds are available via point of purchase. Fans can also swap their May 5 tickets for the still-happening Yeah Yeah Yeahs event on May 4 show, which is being curated by SPIN cover stars the Yeah Yeah Yeahs. The shows are part of ATP’s I’ll Be Your Mirror series.