Question: What magazine did Mark Frith write for?

Context paragraphs:
Fred Frith Guitar Quartet: The Fred Frith Guitar Quartet was a United States-based contemporary classical and experimental music guitar quartet comprising Fred Frith, René Lussier, Nick Didkovsky and Mark Stewart.  The group was formed in 1989 by Frith and they performed extensively across North America and Europe for the next ten years, including at the 14th Festival International de Musique Actuelle de Victoriaville in Victoriaville, Quebec, Canada in May 1997.  They recorded their first album, "Ayaya Moses" in 1996 and released a live album, "Upbeat" in 1999.

Shelley (TV series): Shelley is a British sitcom made by Thames Television and originally broadcast on ITV from 12 July 1979 to 12 January 1984 and from 11 October 1988 to 1 September 1992.  Starred Hywel Bennett as James Shelley, originally 28 years old and a sardonic, perpetually unemployed anti-establishment 'freelance layabout' with a doctoral degree.  In the original run, Belinda Sinclair played Shelley's girlfriend Fran, and Josephine Tewson appeared regularly as his landlady, Edna Hawkins.  The series was created by Peter Tilbury who also wrote the first three series.  The scripts for subsequent episodes were by Andy Hamilton and Guy Jenkin (both of whom would later go on to write the hugely successful "Drop the Dead Donkey" for Channel 4), Colin Bostock-Smith, David Frith, Bernard McKenna and Barry Pilton.  All 71 episodes were produced and directed by Anthony Parker.

Heat (magazine): Heat is a British entertainment magazine published by German company Bauer Media Group.  s of 2004 it is one of the biggest selling magazines in the UK, with a regular circulation over half a million.  Its mix of celebrity news, gossip, beauty advice and fashion is primarily aimed at women, although not as directly as in other women's magazines.  It also features movie and music reviews, TV listings and major celebrity interviews.  The magazine is headquartered in London.

Mark Frith: Mark Frith (born 22 May 1970, Sheffield) is a British journalist and editor.  He has been a writer and editor for magazines such as "Smash Hits", "Time Out" and "Heat".  He has since branched into TV and Radio presenting and is an author of novels.

Let It Rock (magazine): Let It Rock was a monthly British music magazine, which featured lengthy critical articles, record reviews, and feature articles covering a wide spectrum of popular music, including soul, reggae, and blues.  Between October 1972 and December 1975, 35 issues of the magazine were published in London.  Dave Laing was the founding editor; John Pidgeon took over as editor in October 1973.  The reviews editor was Simon Frith, and Charlie Gillett was consultant editor.  Other contributors included John Peel, Lester Bangs, Michael Gray, Mick Gold, Mick Houghton, Jean Peters, David Downing, Gary Herman, Idris Walters, Karl Dallas and Phil Hardy, and the soul music column was written by Pete Wingfield.  Designers and illustrators included Barney Bubbles, George Snow, Kevin Sparrow and Peter Till.  The magazine struggled to achieve consistent sales of 20,000 and closed due to market forces.  Music writers David Hepworth and Barney Hoskyns have called "Let It Rock" influential, and suggested that it was the precursor of such music publications as "Q magazine" and "Mojo".

Weird (travel guides): Weird is a series of travel guides written by various authors and published by Sterling Publishing of New York City.  Started by Mark Moran and Mark Sceurman with a magazine called "Weird N.J.", together or separately, they often write, collaborate, edit and/or write the forward of the other guides.  As of July 2011, all but seventeen states (Alabama, Alaska, Arkansas, Delaware, Hawaii, Idaho, Iowa, Kansas, Mississippi, Montana, Nebraska, New Mexico, North Dakota, South Dakota, Utah, West Virginia and Wyoming) have been covered within individual books.

Mark Frith (musician): Mark Frith is an English singer-songwriter and multi-instrumentalist, and currently the lead singer of the band The Troubadours.

Mark Frith (disambiguation): Mark Frith is a journalist.

Bongwater (band): Bongwater was a psychedelic rock band formed in 1985 and dissolved in 1992.  The group was founded by Ann Magnuson and Mark Kramer (who was also the founder of the Shimmy Disc record label), who had worked together previously in Pulsallama.  The group also featured drummer David Licht and guitarists Dave Rick and later Randolph A. Hudson III.  Guests included Fred Frith, Peter Stampfel and Fred Schneider.

The Troubadours: The Troubadours are an English rock band comprising members from Liverpool, Runcorn and Wigan.  The band was originally formed by Mark Frith and Johnny Molyneux in 2005, and they split in late 2009 but reformed in late 2011.  Their debut single, "Gimme Love" was released in 2007, and reached #20 on the Radio 1 Indie Chart in November.  Their second single, "(I'm Not) Superstitious" was released in June 2008 reaching Number 8 in UK indie singles Chart.  Their album 'The Troubadours' was never released in UK but was hugely successful in Japan securing a top ten chart placing and single 'Gimme Love' spent 3 months on top of the MTV Japan video chart.

Supporting paragraphs: Mark Frith Heat (magazine)
Answer: Heat