R&B star Rihanna halted her concert in London on Monday night (19Nov12) and chastised her live band after experiencing technical issues during her set.

The singer hit the stage at The Forum for the penultimate show of her ambitious 777 tour, but she was forced to abruptly halt the gig after launching into her hit single Where Have You Been when she experienced sound problems.

Lashing out at the backing musicians and technicians, she said, "Alright, what the f**k? Stop this s**t. What the f**k is that? Why is the track off from the band?"

Turning to the crowd, Rihanna apologised to fans at the venue and those watching the show live online, explaining, "This is the bulls**t we deal with when we just doing a random rock and roll tour with no rehearsals and s**t (sic).

"I apologise for everybody at home streaming (the concert online)... We're going to start this one again from the top."

Rihanna will wrap up the 777 tour with a final stop in New York on Tuesday (20Nov12), concluding her mission to perform seven concerts in seven countries in seven days. She kicked off the trek in Mexico last week (14Nov12) and has since played in Toronto, Canada; Stockholm, Sweden; Paris, France and Berlin, Germany.