Maggie Rogers is known for her inventive pop music ... and opening up in-person box offices to sell tickets. "Come buy a concert ticket like it's 1965," she said in a recent social media video.

Maggie Rogers is heading back on the road ... Ryan Beatty will join Rogers as the opening act on her fall tour dates. The previously announced first leg of the Don't Forget Me Tour kicks off ...

"I mean going from hockey to concert, concert to PBR ... spent time there when she was on tour with Grammy-nominated artist Maggie Rogers. Callihan played guitar on this nationwide tour.