The boyband were speaking during a Q&A session with their fans for their new online series Bring Me To 1D.
"I sometimes sing Michael Jackson," said Harry Styles, before Liam Payne continued: "I find myself singing a lot of Ed Sheeran songs in the shower."
Louis Tomlinson added: "I'm going to have to join you Liam, I sing Ed Sheeran quite a lot in the shower as well."
Bring Me To 1D was a global competition for fans to meet the group and have a preview of their new music video for 'Kiss You'.
One Direction have achieved global success in 2012, with their first two albums Up All Night and Take Me Home reaching number one in the US.
One Direction perform at Madison Square Garden: