“Released in November 1986, the fully instrumental Jazz From Hell was technically the last studio album that Frank Zappa released in his lifetime, despite having finished two others,” (UDiscoverMusic) … “Fittingly, Jazz From Hell was every bit as uncompromising and groundbreaking as the composer’s best work, giving a tantalizing glimpse of how Zappa might’ve continued to harness cutting-edge technology were it not for his untimely death.
Zappa had been an early adopter of the Synclavier Digital Music System – one of the first digital samplers and synthesizers – using it throughout the mid-’80s” on several albums. “The equipment opened up a world of possibilities for Zappa, allowing him to push the boundaries of his music beyond the capabilities of human players, as he told Keyboardist magazine in 1987: ‘The moment you get your hands on a piece of equipment like this, where you can modify known instruments in ways that human beings just never do, such as add notes to the top and bottom of the range, or allow a piano to perform pitch-bends or vibrato, even basic things like that will cause you to rethink the existing musical universe. The other thing you get to do is invent sounds from scratch. Of course, that opens up a wide range.’
Jazz From Hell arrived at a time when Frank Zappa’s profile had rarely been higher, thanks to his ongoing battle against censorship in music and the Parents’ Music Resource Centre (PMRC) in particular. Hilariously, his efforts in advocating for free speech meant that Jazz From Hell – an instrumental album, lest we forget – was given a Parental Advisory – Explicit Content sticker on release.”
“Night School,” the album’s opening track, starts in C lydian, departing from and returning to it multiple times throughout (the first example: a shift to C# minor from 0:55 – 1:07). The multi-layered electronic groove is so dense and relentless that when it finally disappears during the outro (4:37), we’re left with a feeling of relative restfulness — even though the melody is a lone sustained siren of a #11 note, leaning hard into C lydian.