The 'Walk This Way' rockers went into the studio with producer Jack Douglas to lay down tracks for their first album since 2004's 'Honkin' on a Bobo' covers album.
Drummer Joey Kramer tweeted: "Aerosmith hits the studio with Jack Douglas today. One word bout 1st day n studio 'Inspiring.' (sic)"
As well as working on the album, the group - which also includes singer Steven Tyler, bassist Tom Hamilton and guitarist Joe Perry - have also announced an eight-day tour of Japan, starting on November 22, as they want to show their support for the country which was devastated by an earthquake and tsunami earlier this year.
Joe said: "Our prayers are with all of our Japanese fans and the people of Japan. They can use all of our prayers and whatever help we can give. We can't wait to be there and play for the people who have supported us for the past 40 years.
"Our fans know how much we love them and we are eager to return and give them the show of a lifetime, especially after the tragedy they have recently been through."