Soulful siren, Adele, who’s sophomore album, 21, is set to hit the top of the charts this week, covers the brand new issue of Billboard Magazine.

The cover story to promote her latest release, which has gone UK Platinum in one week, outselling the likes of Bruno Mars and Rihanna, touches on the success of her single “Rolling In The Deep”, the difference between her debut album, 19 and 21, including why she doesn’t use Twitter.

See below for a few experts and the full cover.

The difference between her debut album, 19 and 21:

Adele says much of the inspiration for “21” came from the country and roots music she heard while on the road in America; she singles out Lady Antebellum and rockabilly pioneer Wanda Jackson as particular influences.

“She’d definitely been exposed to things that opened her eyes musically,” says Epworth, who co-wrote and produced “Rolling in the Deep.” “So much of the music from the United States over the last century was formed from various trials and tribulations, and I think that’s reflected on Adele’s record — that she identified with these artists singing about their lives.”

Adele says much of the inspiration for “21” came from the country and roots music she heard while on the road in America; she singles out Lady Antebellum and rockabilly pioneer Wanda Jackson as particular influences. “She’d definitely been exposed to things that opened her eyes musically,” says Epworth, who co-wrote and produced “Rolling in the Deep.”

“So much of the music from the United States over the last century was formed from various trials and tribulations, and I think that’s reflected on Adele’s record — that she identified with these artists singing about their lives.”

On Twitter:

Adele doesn’t use Twitter; she says she was late to the social networking service and fears that if she started tweeting now, it would look like she was only doing it to promote her album. (“I also don’t want to write, ‘Oh, I’m on the toilet — last night’s dinner was really spicy,’ “ she adds. “That’s just gross.”)

Full Billboard Cover:

Click here to read the full cover story.