( CNN ) -- Acoustic rocker John Mayer has bowed out of a series of concerts after suffering from `` something next to my vocal cords called a granuloma , '' he said in a statement released Friday . The singer and songwriter said he had undergone months of monitoring , but the condition -- a small area of tissue inflammation that most often occurs in the lungs -- had prevented him from going ahead with the performances . `` I 'm bummed to have to bow out of both the iheartradio Music Festival in Las Vegas and an appearance with Tony Bennett in Los Angeles , '' he said in the statement . `` I know there were people depending on me to be there and I 'm sorry that I ca n't be on those stages . '' Mayer 's soon-to-be-released album `` Born and Raised '' also will be delayed . It 's `` complete as far as music recording , song selection , and in some cases mixing , '' he said . `` But because of this condition I could n't finish singing on several of the tracks . '' The album , as a result , will be released next year `` instead of this fall or winter . '' `` This is a temporary setback , though I 'm not sure how long or short a period of time it will be , '' he said . `` I 've got the best doctors in the country looking after me and I will be singing and touring again as soon as I get the all clear . '' Mayer said he plans to spend the down time writing and composing , and `` kicking an empty soup can around the West Village . ''
John Mayer says he has a granuloma next to his vocal cords . Granuloma is a small area of tissue inflammation . Mayer 's soon-to-be-released album `` Born and Raised '' will be delayed .