Adele spends fourth week as US No. 1

Adele has scored a fourth week at the top of the US pop charts.

Someone Like You, which is the Hot 100's first number one featuring a vocalist backed only by a piano, is keeping Maroon 5's Moves Like Jagger off the top spot.

Foster the People's Pumped Up Kicks remains at number three.

Rapper Snoop Dogg receives an extra special 40th birthday treat, his collaboration with Wiz Kalifa, Young, Wild and Free debuts at 10.