Their fortunes began to change over the course of 1971, where the band's average earnings doubled. "We realized that the audience was a big part of what we did, which couldn't be duplicated in a studio. A lightbulb finally went off; we needed to make a live album", said Gregg. "At Fillmore East", recorded at the Fillmore East in New York, was released in July 1971. "At Fillmore East" peaked at number thirteen on "Billboard" Top Pop Albums chart, and was certified gold by the Recording Industry Association of America that October, becoming their commercial and artistic breakthrough. Although suddenly very wealthy and successful, much of the band and its entourage now struggled with addiction to numerous drugs; they all agreed to quit heroin, but cocaine remained a problem. His last conversation with Duane was an argument over cocaine: Gregg took some of his brother's supply, and later denied it when accused. In his memoir, "My Cross to Bear", Gregg wrote: "I have thought of that lie every day of my life ... told him that lie, and he told me that he was sorry and that he loved me."