Beigel Sound Lab Favored by Frank Zappa and Jerry Garcia, the Musitronics Mu-Tron III Combined Wild Sonics and Creative Usability Unveiled in 1972, this pioneering envelope filter was a near-instant hit Get The Pick NewsletterAll the latest guitar news, interviews, lessons, reviews, deals and more, direct to your inbox!Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors MOST READ1Dickey Betts on dueling with Duane Allman, and composing Allman Brothers' biggest hit2All-star tribute to David Lindley, one of the greatest sidemen of all time, announced3“We all knew it was really good… The guitar playing is just amazing”: How Dickey Betts made “Ramblin’ Man”, triumphed over tragedy and led the Allman Brothers to their greatest success4Ritchie Blackmore on Steve Howe, Jimi Hendrix, classical influences and more5The Allman Brothers Band’s Dickey Betts has died at 80