Jessie J admits she is nervous about her new album

Jessie J admits she is nervous but excited about releasing her second, as yet, unnamed album.

"I'm not sleeping but in a good way, I'm excited, I want to know what people think, I want to know where it's charting in different countries," she says.

Her debut record Who You Are has sold more than 1.2 million copies.

Despite her success, Jessie J says she doesn't feel anymore confident this time around.

"It's no different, it feels exactly the same, I don't ever expect anything so I've taken nearly a year out of releasing music," she explains.

"Obviously I've still been in the public [eye] doing The Voice and performances and stuff but it feels like you're starting again because if people didn't like it, you're done."

She's released the first new track from her upcoming album this week called Wild which features Dizzee Rascal and Big Sean.

It is already number four on the UK iTunes chart two days after being released.

"It's such a different sound this album and Wild is a very small reflection of what the album sounds like," she says.

"It's exciting for me for people to hear the next single and the single after that because I know what they are now, it's exciting times."

Jessie J is still sporting a shaved head after she cut her hair off, live on television for Comic Relief in March.

She says she has no plans to grow it just yet.

"I think it's good to make a point when you shave your head for charity," she said. "It is easy to manage.

"Although I have to have it bleached every three to four days because it grows so quick and I prefer it blonde and short than I do dark.

"I'm going to grow it I think and play around with it, have a pixie crop and then cut it again."

Follow @BBCNewsbeat on Twitter