A lot has happened to Aerosmith over the past two years...Steven Tyler takes a header off stage, tours cancelled, and oh yeah then Tyler becomes the new American Idol.  Now he promises a new album?

During his interview on Letterman Monday night Steven Tyler finally admited he was not sober when he took a fall off stage during an August 8, 2009 show in South Dakota. 

According to radaronline.com, Steven said, "It's not any news here about my drug use and addictions in the past.  A couple years ago, I was [using the sleeping pill] Lunesta because of some problems with my feet." 

 --He began SNORTING it . . . and that's what he did before that show. 

 --Steven added, "That shows you what kind of a drug addict I was . . . I was looking for any excuse to get high . . . not anymore."

Due to injuries he suffered tons shows were cancelled. Things were looking up, and then Steven Tyler takes the judging gig on Idol and the cycle started over. 

While out promoting "Idol", which premieres TONIGHT, Steven said, quote, "We've certainly been writing.  I know [guitarist] Joe [Perry]'s got some licks, and I got a bunch of songs that I've written for [myself] and / or Aerosmith.

 --"I will be flying out of New York and be back in L.A. [to] watch the premiere.  I get Thursday off, and Friday I'm writing with [producer] Marti Frederiksen, and Saturday we're into a writing program with the band."

 It sounds like the plan is for them to be recording in L.A. while Steven is doing "Idol" . . . then hit the road during the show's off-season.

 --Steven explained, quote, "We're already booked for a tour for November [and] December, that should be South America and Japan . . . so what you hear in the press of Aerosmith getting in the way of 'American Idol', it just isn't so."

More at www.radaronline.com.