John Mayer announced on Thursday his first tour in three years after taking a hiatus for medical reasons.

The 35-year-old is set to go on the road and perform in more than 40 shows in four countries beginning next month. The tour will kick off April 25 in Tuscaloosa's Amphitheater and end in October at Los Angeles' Hollywood Bowl.

American Idol 2012 winner Phillips Phillips will open for Mayer.

Mayer was forced to cancel a tour scheduled to begin in March 2012 due to returning throat issues that prevented him from speaking and singing for months. He was diagnosed with granuloma, severe tissue inflammation on his vocal chord, shortly after he completed his fifth album, 2012's Born and Raised. At the time, he was concerned he would never be able to record again.

The Shadow Days singer expressed his gratitude for being able to perform once more in a recent interview. He called the ability to sing again, "the greatest gift I have in my life" and also said that the "opportunity to play again is also the opportunity to dream again."

"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," the singer, songwriter and guitar player told Billboard. "My dreams have come true twice. That's really cool."

Fans can purchase tickets for Mayer's tour on the singer's website. Proceeds of one dollar from each ticket sale will be donated to the charity NCIRE, which supports returning Veterans.

View the list of Mayer's upcoming tour dates here:

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)

Watch John Mayer's Shadow Days video from his Born and Raised album here

Tags
John Mayer, Video