ARIANA GRANDE

Ariana's single, "Problem", was a big hit last summer - you probably know it even if you don't realize that you do! The 21-year-old American singer has now released her second album, My everything, and it's a hit too. Ariana makes pop and R&B music with elements of funk, dance and hip hop. It's a winning combination... The American President Obama and his family are fans and Ariana has performed twice at the White House!