Photo by Jason Woodill

After a lengthy hiatus caused by problems with his vocal chords and two subsequent throat surgeries, John Mayer has confirmed plans to hit the road again, in support of 2012's Born and Raised. It will be his first tour in three years, after canceling dozens of dates last year due to his health.

Mayer will visit over 40 cities in four countries during his trek, which includes dates at Colorado's famed Red Rocks and a festival stop at Rock in Rio in Rio De Janeiro, Brazil.

American Idol winner Phillip Phillips will open for the singer on nearly all the dates.

"The greatest gift I have in my life is the opportunity to play again, which is also the opportunity to dream again," Mayer told Billboard this week. "My dreams were in escrow, but when I found out this thing in my throat had receded, the most exciting thing for me was having a second chance at a new life. My dreams have come true twice. That's really cool."

Mayer performed back in January for the first time in two years at a benefit for firefighters in Montana.

UPDATE (3/21/13, 10 p.m.): Mayer debuted a new song during a Google+ Hangout, following his tour announcement. Watch the video of his performance of "Dear Marie" below.

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See the tour dates below:

April 25 -- Tuscaloosa, AL (Tuscaloosa Amphitheater - SOLD-OUT)
April 26 -- New Orleans, LA (JazzFest)
July 6 -- Milwaukee, WI (Summerfest- Marcus Amphitheater
July 7 -- Maryland Heights/St. Louis, MO (Verizon Wireless Amphitheater)
July 9 -- Cincinnati, OH (Riverbend Music Center)
July 10 -- Bonner Springs, KS (Cricket Wireless Amphitheater)
July 12 -- Woodlands, TX (The Cynthia Woods Mitchell Pavilion)
July 13 -- Dallas, TX (Gexa Energy Pavilion)
July 16 -- Morrison, CO (Red Rocks Amphitheatre)
July 19 -- Ridgefield, WA (Sleep Country Amphitheater)
July 20 -- George, WA (The Gorge)
July 22 -- Paso Robles, CA (California Mid State Fair)
July 24 -- Wheatland, CA (Sleep Train Amphitheatre at Sacramento)
July 26 -- Mountain View, CA (Shoreline Amphitheatre)
July 27 -- Irvine, CA (Verizon Wireless Amphitheater Irvine)
Aug. 6 -- Cuyahoga Falls, OH (Blossom Music Center)
Aug. 7 -- Clarkston, MI (DTE Energy Music Theatre)
Aug. 9 -- Tinley Park, IL (First Midwest Bank Amphitheatre)
Aug. 10 -- Noblesville, IN (Klipsch Music Center)
Aug. 11 -- Springfield, IL (Illinois State Fair)
Aug. 13 -- Darien, NY (Darien Lake Performing Arts Center)
Aug. 14 -- Toronto, ON (Molson Canadian Amphitheatre)
Aug. 16 -- Hartford, CT (Comcast Theatre)
Aug. 17 -- Mansfield, MA (Comcast Center)
Aug. 20 -- Bethel, NY (Bethel Woods Center for the Arts)
Aug. 21 -- Holmdel, NJ (PNC Bank Arts Center)
Aug. 23 -- Camden, NJ (Susquehanna Bank Center)
Aug. 24 -- Virginia Beach, VA (Farm Bureau Live at Virginia Beach)
Aug. 25 -- Burgettstown, PA (First Niagara Pavilion)
Aug. 27 -- Allentown, PA (The Great Allentown Fair)
Aug. 28 -- Wantagh, NY (Nikon at Jones Beach Theater)
Aug. 30 -- Saratoga Springs, NY (Saratoga Performing Arts Center)
Aug. 31 -- Bristow, VA (Jiffy Lube Live)
Sept. 1 -- Atlantic City, NJ (Borgata Resort Spa and Casino Event Center)
Sept. 4 -- Charlotte, NC (Verizon Wireless Amphitheater Charlotte)
Sept. 5 -- Raleigh, NC (Time Warner Cable Music Pavilion at Walnut Creek)
Sept. 7 -- Tampa, FL (Live Nation Amphitheater at the Florida State Fairgrounds)
Sept. 8 -- West Palm Beach, FL (Cruzan Amphitheatre)
Sept. 17 -- Buenos Aires, Argentina (Luna Park)
Sept. 21 -- Rio De Janeiro, Brazil (Rock in Rio)
Sept. 27 -- Atlanta, GA (Aaron's Amphitheatre at Lakewood)
Oct. 1 -- Albuquerque, NM (Isleta Amphitheater)
Oct. 2 -- Phoenix, AZ (Desert Sky Pavilion)
Oct. 4 -- San Diego, CA (Sleep Train Amphitheatre)
Oct. 5 -- Los Angeles, CA (Hollywood Bowl)