You could win Doobie Brothers tickets from KEYN! April 22, 2018 - Stiefel Theatre The Doobie Brothers are coming to The Stiefel Theatre, April 22, 2018. Register now for your chance to win two tickets to the show from KEYN! DOOBIE BROTHERS TICKET GIVEAWAY MATERIAL RULESNO PURCHASE NECESSARY.Beginning February 14, 2018 through April 15, 2018, click on the contest link at www.keyn.com and fill out the form to enter to win. You may enter once per day.