Hot Concert in Boston

JAMN 94.5 SUMMER JAM This multi-artist hip-hop and R&B festival is usually chock full of the au courant, but this year the station landed the hottest property of the moment: Canadian rapper Drake. Also on the bill are hit-makers like Ludacris, B.o.B., Taio Cruz, and Nicki Minaj. 4 p.m. June 5. $25-$125.50. Comcast Center, Mansfield. 877-598-8689.