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Seventy-eight might be an inauspicious anniversary to celebrate, but ad agency Leo Burnett is evidently staffed in part by fervent music geeks who just can't help themselves. To commemorate the 78th of the agency founded in Chicago in 1935, the agency commissioned the pressing of an actual 78 rpm record—music curated by the Numero Group with graphics designed in-house as seen below. It also asked Numero to put together a playlist of Chicago tracks—you can download that mix online. It also invited Chicago creatives to design spaces within the office for the anniversary—and sent them one-of-a-kind hand-painted invitations on 78 rpm records to do so.

You can find out more about 78lb at 78lb.leoburnett.com.