Sleepytime Gorilla Museum (often abbreviated to SGM) was an American experimental rock band, formed in 1999 in Oakland, California. The band fused contemporary classical, industrial, and art rock characteristics into a very idiosyncratic melange. Though thoroughly outside the mainstream of popular rock music, the band received high critical acclaim for their ability to combine diverse musical elements in nuanced and complex ways, often incorporating advanced theoretical considerations, while avoiding either ostentatious 'artiness' or ironic po-mo pastiche and remaining eminently listenable for mere enjoyment.The band was begun by Nils Frykdahl (guitars, flutes, bells, others) and Dan Rathbun (bass, 'log' dulcimer, trombone, lute, others) of the band Idiot Flesh with Carla Kihlstedt (violins, percussion guitar, autoharp, organ, bulbul, others) of the band Charming Hostess, and included at various times:
- Michael Mellender
- David Shamrock
- Matthias Bossi
- Frank Grau
- Moe! Staiano
- Grand Opening and Closing! (2001)
- Of Natural History (2004)
- In Glorious Times (2007)
This band exhibits the following tropes:
- Bizarre Instrument: Too many to include, but to name one — the 'sledgehammer dulcimer', a long wooden tube strung with 7' grand piano strings, played with a hammer and a metal cylinder (which acts as a sliding fret, making this instrument microtonal).
- Do Not Go Gentle into That Good Night: They quote the poem in Sleep is Wrong.
- Eldritch Abomination: The Donkey-Headed Adversary of Humanity is a character in the band's first two albums and something of an overall mascot as well.
- Everybody Hates Mathematics: Subverted, since a number of their songs include mathematical themes, and the band were fond of stories about dada artists and mathematicians (both real and fictitious).
- Everything Is an Instrument: Dan Rathbun provided most of the custom-made instruments played by the band members. Some of them are made of kitchen tools, rare metal objects, and even parts from other instruments.
- Harsh Vocals: Nils Frykdahl serves as the prime example, but the rest of the band members have proven to be successful in using this technique proficiently from time to time.
- Indecipherable Lyrics: See the "Word Salad Lyrics" example below.
- Mad Mathematician: Several of them are quoted in song lyrics as sources to their fictitious stories. An example can be found on FC: The Freedom Club, which quotes and refers to American mathematician and anarcho-primitivist Ted Kaczynski.
- Mad Oracle: The story told in their first two albums features a Humanoid Abomination known as The Donkey-Headed Adversary of Humanity, who prophesies an unimaginable catastrophe awaiting humanity.
- Motor Mouth: Nils especially, though all of them pitch in.
- Mohs Scale of Rock and Metal Hardness: Their music goes all over, occasionally crossing as high as 8 or so on songs like Helpless Corpses Enactment or The Donkey-Headed Adversary of Humanity Opens The Discussion, and dipping down as low as 1 on tracks like Sunflower.
- One song, the 14-minute Babydoctor, runs the gamut, beginning in a dreamy 2 as the band whisperly intones a refrain of "Thank You, Thank You, Thank You...", and ending in a nerve-shredding 8 or 9 as Nils bellows in a vicious death metal snarl about being raped(/replaced) by the "light" in Enlightenment over tortured violin, warped guitar, and staggering rhythm.
- Neoclassical Punk Zydeco Rockabilly: Also, to a large extent, Genre-Busting.
- Romanticism Versus Enlightenment: Their second full-length release, Of Natural History, is a concept album exploring this theme. Arguably the band's darkest work, its various tracks include mocking paeans against Christianity (A Hymn to the Morning Star), songs which threaten humanity with annihilatory violence (The Donkey-Headed Adversary of Humanity Opens the Discussion, Bring Back The Apocalypse), venomous lyricisations of murderous technophobic terrorism (FC: The Freedom Club), and songs about the alienating effects of a consummate technorationalistic enlightenment culture (Phthisis, The Creature, Babydoctor). Despite all that, the album as a whole doesn't particularly come down on the Romanticism side so much as it comes down hard and heavy on the Cynicism side.
- Sensory Abuse: While little of it could ever be mistaken for mellow easy listening, some songs in particular prominently feature freakish dissonances, abrupt screaming, bizarre grinding, scraping, popping, or clicking, shrill screeching, or any combination of these with sudden dynamic explosions of volume. Songs like The Stain and Ossuary come to mind.
- Uncommon Time: A staple of their experimental rock/metal style. The work on their first album was said by the Pitchfork to resemble a mixture of Lascaille's Shroud, Meshuggah and Secret Chiefs 3.
- Word Salad Lyrics: The lyrics of Helpless Corpses Enactment are a series of direct quotations from James Joyce's infamous novel Finnegans Wake, known for its radical linguistic experimentation and total abandonment of the conventions of plot and character construction. A selection quoted within the song, for example:Vah! Suvarn Sur! Scatter brand to the reneweller of the sky,thou who agnitest! Dah! Arcthuris comeing! Be! Verb umprin-cipiant through the trancitive spaces! Kilt by kelt shell kithagainwith kinagain. We elect for thee, Tirtangel. Svadesia salve! WeDurbalanars, theeadjure. A way, the Margan, from our astamite,through dimdom done till light kindling light has led we hopasbut hunt me the journeyon, iteritinerant, the kal his course,amid the semitary of Somnionia.