He’s got such a smooth, distinctive voice, and yet after the glory era of “What a Fool Believes” and “I Keep Forgettin’,” Michael McDonald’s ride on the charts veered off-track—for 20 years. Finally, a series of albums mining the Motown Records catalogue brought the blue-eyed soul singer back to prominence in the aughts, and guest spots on South Park and Family Guy showcased a sense of humor in the former Doobie Brother. Last year, he bestowed upon the world his version of “While You Wait for the Others” by Brooklyn indie band Grizzly Bear, and he glides into town in all his white-haired, husky-throated glory on Friday, July 30, at the Wells Fargo Center. 50 Mark West Springs Road, Santa Rosa. 8pm. $20–$90. 707.546.3600.