JEFFREY R. STAAB/CBS /Landov Aretha Franklin will be sitting out for a couple of concerts. The iconic songstress canceled her Friday concert at the Wolf Trap National Park for the Performing Arts in Virginia "due to doctors' orders," according to a statement. Unfortunately, it probably won't be the only one she will be backing out of in the near future. "I will have to cancel a few concerts for the next month or so," the statement continued. Ticket holders will be refunded the cost of their tickets, but there wasn't any mention of rescheduled dates.