*Maxwell is the lone R&B act that appears in the star-studded lineup of “Today’s” annual summer concert series, presented Fridays at Rockefeller Plaza in Manhattan beginning May 14.

The soul crooner will take the stage on June 25 to promote his current album “BLACKsummers’night,” according to “Today” senior producer Melissa Lonner.

Sting, Justin Bieber, Lady Gaga, John Mayer and Carrie Underwood are also booked for the 2010 series sponsored by Toyota.

Below is the full itinerary:

Sting, May 14
The Script, May 21
“American Idol” winner/runner-up, June 3
Justin Bieber, June 4
Christina Aguilera, June 8
Rascal Flatts, June 11
James Taylor/Carole King, June 18
Maxwell, June 25
Maroon 5, July 2
Lady Gaga, July 9
Enrique Iglesias, July 16
John Mayer, July 23
Carrie Underwood, July 30
Train, Aug. 6
Ke$ha, Aug. 13
Keith Urban, Aug. 20
Katy Perry, Aug. 27