Twenty years ago, Mötley Crüe put out Dr. Feelgood, and to commemorate the release the band will be playing the album in full on their Crüe Fest 2 tour this summer. To prepare, Nikki Sixx and Vince Neil chatted with Rolling Stone about the stories behind the album’s songs. What did we learn? That Sixx and Neil need to brush up on their own tunes, and that Heather Locklear, Aerosmith and more than one drug dealer figured into the equation. Get the full story here, and listen to the album while you soak in the old stories:

• “Dr. Feelgood”: Motley Crue’s Track By Track Guide to 1989 Classic