SINGER-songwriter Gavin DeGraw is recovering after being attacked by a group of men on a city street. Police say DeGraw suffered a broken nose and a cut to his face after he was beaten up by unknown male attackers early Sunday morning. An investigation is ongoing. A statement sent out by his spokesman Monday night says he was taken to Bellevue Hospital in an ambulance and is still hospitalized under observation. DeGraw has been forced to cancel a planned concert Tuesday in Saratoga Springs, N.Y. DeGraw has a new album, Sweeter, due out in September. Hes probably best known for his hit song Chariot. Agencies