Mötley Crüe’s Nikki Sixx has announced his new memoir The First 21: How I Became Nikki Sixx.The bassist’s latest book will focus on his “origin story”, documenting his childhood upbringing and eventual move to LA where he began his career in music.“You’ve heard the tales of excess and debauchery. All the peaks and the valleys that came with rock’n’roll stardom and my life in one of the world’s biggest bands.