Renowned movie composer Ennio Morricone will be celebrated this fall with a new double-disc compilation, "Crime and Dissonance."

Renowned movie composer Ennio Morricone will be celebrated this fall with a new double-disc compilation, "Crime and Dissonance." Due Sept. 6 via Ipecac, the 30-track set focuses primarily on Morricone's experimental and oft-overlooked work from the early 1970s.

It turns out that the collection was originally planned for a 2002 release following 2000's "Morricone 2000" and 2001's "Morricone 2001." But when the set was shelved, Ipecac eventually stepped in and offered to give it a home.

Ipecac head (and Tomahawk/Fantomas frontman) Mike Patton tells Billboard.com he has become a great admirer of Morricone's work in recent years. "I knew the [Sergio] Leone scores and loved them, but really became hooked while living in Italy in the '90s," he says. "His compositions are virtually everywhere -- you hear them on late night TV programs, '60s pop radio stations, in jingles and in classical repertoires. I became fascinated with the depth of his work and fell in love with his compositions as they became a part of my everyday life."

The track list for "Crime and Dissonance" was assembled by Sun City Girls member Alan Bishop. "I was given a specific list of Morricone film scores to choose from which were available to license and assembled the compilation from that list," he says.

But when Bishop wanted to include an extra track, he hit a snag. "The only difficulty at all was waiting for Sugar Records to allow the licensing of the final track, an 11-minute epic cut from 'Un Uomo Da Rispettare' [A Man To Respect]," he says. "It wasn't on the original list given to me to choose from but I really thought it belonged in the set and would be the perfect finale for the compilation.

"There have been so many Morricone compilations over the years that it's difficult to choose strong tracks which have never been on previous comps, and it's no different with this one," Bishop continues. "His true fans are waiting for the scores that have not been reissued and some that were never originally released. The Cometa label did several highly sought-after Morricone soundtrack LPs in editions of 500 and 1000, yet only one has been reissued so far. Great scores like 'Matchless' and 'Mysticae' are examples of these."

Patton is thrilled that the collection focuses on the uncommon. "With the wealth of Morricone comps, collections and reissues available out there we felt it was imperative to compile something truly special and different," he offers. "On a more personal level, I wanted this collection to feel more like a tribute to one of my favorite composers."

Bishop names "A Man To Respect" and "Quella Donna," from the film "Forza G," as two favorites. "All tracks work in the sequencing quite well due to the comp's experimental context," he says. "It's truly a compelling listening experience and shows what Morricone has accomplished for cinematic moments of oddity."

Although the Rome-based Morricone had no involvement with "Crime and Dissonance," he continues to compose and occasionally perform. "His work ethic has been relentless over the years but he's been slowing down his production lately," Bishop says. "Also, his son, Andrea, has been composing for film consistently now for a few years."