During the 55th Annual Grammy Awards on February 10, 2013, Rihanna performed "Could You Be Loved" alongside Bruno Mars, Sting, Damian Marley and Ziggy Marley as a tribute to Bob Marley. Rihanna performed for a second time at the award ceremony, where she performed her album's second single "Stay" along with Mikky Ekko. To further promote the album, Rihanna embarked on her fifth concert tour, the Diamonds World Tour in March 2013. North American, African and European dates were announced with ASAP Rocky serving as the support act for North America, while David Guetta performed for the Moroccan date of the tour as well as some selected European dates including London and Paris. In September 2013, she also performed on Channel 4's "" to promote "What Now".