Hopscotch Music Festival has announced a Sept. 21 makeup date at Raleigh’s Memorial Auditorium to replace hip-hop artist Big Boi’s cancellation of his originally-scheduled Sept. 6 appearance at City Plaza during the festival, which runs Sept. 5-7 in downtown Raleigh.

The festival also announced former Kanye West tour DJ A-Trak and Brooklyn synth-pop duo Holy Ghost! as replacements for Big Boi on the Sept. 6 City Plaza bill, joining previously scheduled openers Future Islands and Gross Ghost. The concert will now run from 5:40 p.m. to 11 p.m.

An announcement on Hopscotch’s website provides the following details for customers who purchased single-show tickets to Big Boi’s Sept. 6 appearance:

1) Customers will be contacted directly and provided a free pass to the Sept. 21 show;
2) They can also keep and use their tickets for the reconfigured Sept. 6 City Plaza show;
3) Those who wish for a refund on account of Big Boi’s cancellation can request one from Etix by emailing support@etix.com.

The announcement specifies that refund requests will be accepted not only for Sept. 6 single-show tickets but also for one-day passes to all Sept. 6 shows, as well as three-day festival passes.

[Disclosure: INDY Week music editor Grayson Currin is co-director of Hopscotch.]