Question: Letters from a Porcupine was a documentary about a rock band formed where?

Context paragraphs:
Blind Melon: Blind Melon (Stylized as BLind MeLoN) is an American rock band formed in Los Angeles, California by two musicians from Mississippi and one from Indiana.  Best known for their 1993 single "No Rain", the group enjoyed critical and commercial success in the early 1990s with their neo-psychedelic take on alternative rock.

Letters from a Porcupine: Letters from a Porcupine is a 1996 documentary style film made up of footage from the musical career of the alternative rock band Blind Melon including music videos, interviews, live performances and home movie footage.

Porcupine Tree: Porcupine Tree were an English rock band formed by musician Steven Wilson in 1987.  The band began essentially as a solo project for Wilson, who created all of the band's music.  However, by 1993, Wilson desired to work in a band environment, and so brought on frequent collaborators Richard Barbieri on keyboards, Colin Edwin on bass and Chris Maitland on drums as permanent band members.  With Wilson still in charge of guitar and lead vocals, this would remain the lineup until 2001, when the band recruited Gavin Harrison to replace Maitland on drums.

The Cult: The Cult are a British rock band formed in 1983.  Before settling on their current name in January 1984, the band performed under the name Death Cult, which was an evolution of the name of lead singer Ian Astbury's previous band Southern Death Cult.  They gained a dedicated following in the UK in the mid-1980s as a post-punk/gothic rock band, with singles such as "She Sells Sanctuary", before breaking mainstream in the United States in the late 1980s as a hard rock band with singles such as "Love Removal Machine" and "Fire Woman".  According to music critic Stephen Thomas Erlewine, the band fuse a "heavy metal revivalist" sound with the "pseudo-mysticism ... of The Doors [and] the guitar-orchestrations of Led Zeppelin ... while adding touches of post-punk goth rock".  Since the initial formation of Southern Death Cult in Bradford in 1981, the band have had various line-ups; the longest-serving members are Astbury and guitarist Billy Duffy, the band's two songwriters.

The Twilight Sad discography: The discography of Scottish rock band The Twilight Sad consists of four studio albums, four compilation albums, eleven singles, and five extended plays (EPs).  The band currently consists of James Graham (vocals), Andy MacFarlane (guitar, producer), and Mark Devine (drums).  The Kilsyth-based band formed in 2003 and were signed to Fat Cat Records when Alex Knight, co-founder of the label, went to Glasgow to watch the band perform their third gig and signed them on the spot.  The band released their debut EP "The Twilight Sad" in November 2006 in the United States only, followed by their debut album "Fourteen Autumns & Fifteen Winters" in April 2007, which garnered widespread critical acclaim.  The album spawned two singles, "That Summer, at Home I Had Become the Invisible Boy" in April, and "And She Would Darken the Memory" in July.  The following year, the band released "Here, It Never Snowed.  Afterwards It Did", a mini-album of reworked versions of songs from "Fourteen Autumns & Fifteen Winters" and two non-album tracks, inspired by stripped-down live performances.  A collection of live versions and previously unreleased tracks entitled "Killed My Parents and Hit the Road" was released in December 2008.  The Twilight Sad's second studio album, "Forget the Night Ahead", was released in September 2009 to further acclaim and marked a shift in the band's direction towards a darker and more streamlined sound.  The album produced three singles: "I Became a Prostitute" in August 2009, "Seven Years of Letters" in October 2009, and "The Room" in April 2010.  Founding bassist Craig Orzel left the band in February 2010, and the band released "The Wrong Car" EP in September of that year.

The Night Before (album): The Night Before is the first of two mini-albums by British alternative rock band James, released in April 2010.  It featured seven tracks, plus one of two bonus tracks (depending on edition), and was available on CD and as an MP3 download.  Some of the songs, such as "Porcupine", had been previewed by the band at previous shows.  A track titled "All My Letters" was made available for iTunes buyers, whilst purchasers of the CD get access to an online bonus exclusive track "Mother's a Clown".

Grice Peters: Grice Peters (born Martin Charles Grice Peters) aka GRICE, is a London-born English art rock musician, vocalist, lyricist and songwriter.  Grice formed and fronted underground brit-pop flavoured bands 'Laugh like A Madman', 'The burning martyrs', 'The Martyrs', 'SWANSTON' and the avant-garde art rock outfit 'hungersleep' before starting his solo career.  In 2012 he released his debut solo GRICE album PROPELLER which featured renowned saxophonist Raphael Ravenscroft and renowned pedal steel guitarist BJ Cole as well as a number of contributors including Markus Reuter, 05Ric, Luca Calabrese amongst others.  The album was produced by Lee Fletcher and co-produced by Grice.  In 2013 The track 'Highly Strung' was remixed by English synthesizer player, keyboardist and composer Richard Barbieri formerly a member of new wave pioneers Japan and current solo artist and member of progressive rock band Porcupine Tree.  The track Highly Strung was personally selected by Tom Robinson and played on his BBC Radio 6 Music Mixtape show.

American Hi-Fi: American Hi-Fi is an American rock band formed in Boston in 1998.  The band consists of lead vocalist/rhythm guitarist Stacy Jones, lead guitarist Jamie Arentzen, bassist/backing vocalist Drew Parsons, and drummer Brian Nolan.  Prior to the group's formation, Stacy Jones was well known for being a drummer in the successful alternative rock bands Veruca Salt and Letters to Cleo.  American Hi-Fi has a close relationship with Miley Cyrus, whose band shares two members with American Hi-Fi.  The group has a mixed musical style that includes influences from pop punk, alternative rock, and power pop.

Steve Miller Band: The Steve Miller Band is an American rock band formed in 1966 in San Francisco, California.  The band is led by Steve Miller on guitar and lead vocals.  It is best known today for a string of (mainly) mid-1970s hit singles that are staples of classic rock radio, as well as several earlier acid rock albums.  Miller left his first band to move to San Francisco and form the Steve Miller Blues Band.  Shortly after Harvey Kornspan negotiated the band’s landmark contract with Capitol Records in 1967, the band shortened its name to the Steve Miller Band.  In February 1968, the band recorded its debut album, "Children of the Future".  It went on to produce the albums "Sailor", "Brave New World", "Your Saving Grace", "Number 5", "Rock Love" and more.  The band's "Greatest Hits 1974–78", released in 1978, sold over 13 million copies.  The band continued to produce more albums and in 2014 toured with the rock band Journey.  In 2016, Steve Miller was inducted as a solo artist in the Rock and Roll Hall of Fame.

Greylevel: Greylevel are a progressive rock band from Vancouver, British Columbia, Canada which was formed by Derek Barber in 2001.  While broadly falling in the progressive rock genre, their music is also associated with both psychedelic rock and art rock with influences as diverse as Pink Floyd, Talk Talk, Peter Gabriel, Arvo Pärt and Porcupine Tree.

Supporting paragraphs: Letters from a Porcupine Blind Melon
Answer: Los Angeles, California