Lauryn Hill and rapper Nas have been forced to cancel a joint concert due to a scheduling conflict.

R&B singer Lauryn Hill and rapper Nas have been forced to cancel a joint concert due to a scheduling conflict.

The stars were due to take the stage at the Bell Center in Montreal, Canada on Tuesday (06Sep11) as part of the annual Rock the Bells tour. The former Fugees frontwoman was due to sing her classic album The Miseducation of Lauryn Hill from start to finish, while Nas was set to perform his 1994 debut Illmatic.

Promoters are offering refunds to fans after calling off the gig.