Question: Philadelphia and Guitar Player are both what type of publication?

<P0-S0> Kurdt Vanderhoof (born June 28, 1961) is an American guitarist, best known as the lead guitarist and founding member of the American heavy metal band Metal Church. <P0-S1>  As early as 1976, in Aberdeen, Vanderhoof was ardently networking with local musicians and had formed a band called Tyr, which included Kirk Arrington on drums and Vanderhoof on rhythm guitar. <P0-S2>  In 1978 Vanderhoof joined Seattle hardcore punk band The Lewd adopting the stage name "Blobbo" on bass guitar, switching instruments to guitar the following year. <P0-S3>  The Lewd relocated from Seattle to San Francisco in 1980. <P0-S4>  Following Vanderhoof's departure from The Lewd he formed Metal Church, named after a nickname given to his San Francisco apartment. <P0-S5>  Vanderhoof moved back to his hometown, Aberdeen, Washington, with a vinyl single of Trash Can Baby as proof of his interlude with the Lewd. <P0-S6>  In the summer of 1982, he formed a heavy metal cover band named Shrapnel. <P0-S7>  It consisted of Tom Weber on drums, Duke Erickson on bass (both from Hoquiam), Mike Murphey ("muff", from Montesano) and a guitar player Vanderhoof had jammed with in high school(Aberdeen). <P0-S8>  Shrapnel played four events to warm up, including a frat party at Pacific Lutheran University, after which the other guitar player quit, having had a religious experience, unwilling to cover The Number of The Beast by Iron Maiden. <P0-S9>  His part was replaced by Craig Wells of Aberdeen, and Tom was eventually replaced by Kirk Arrington (also from Hoquiam) on drums. <P0-S10>  When Mike Murphy left the band, they recruited David Wayne for vocal duties. <P0-S11>  By 1983, Shrapnel had renamed itself to Vanderhoof's original band name, Metal Church. <SEP> <P1-S0> Philadelphia (also called "Philadelphia magazine" or referred to by the nickname "Phillymag") is a regional monthly magazine published in Philadelphia, Pennsylvania by the Lipson family of Philadelphia and its company, Metrocorp. <SEP> <P2-S0>  It contains articles, interviews, reviews and lessons of an eclectic collection of artists, genres and products. <P2-S1>  It has been in print since late 1967. <P2-S2>  The magazine is currently edited by Michael Molenda. <P2-S3> Guitar Player is an American popular magazine for guitarists, founded in 1967 in San Jose, California, United States. <P2-S4>  "Guitar Player" is a part of the Music Player Network. <SEP> <P3-S0> Komet Amps is an American manufacturer of boutique guitar amplifiers, based in Baton Rouge, Louisiana. <P3-S1>  According to "Guitar Player" magazine, many consider them to be "torchbearer for the late Ken Fischer of Trainwreck Circuits", since the company got its start producing the Fischer-designed Trainwreck K60. <P3-S2>  Since then the company has begun producing models they developed themselves; the Komet Aero 33, a single-channel 33-watt amplifier head (listed for $3799) was a "Guitar Player" Editors' Pick. <P3-S3>  Trainwrecks never had their electric components hidden in epoxy however, Komet's Aero 33's resistors and capacitors "are individually concealed in black shrink wrap". <P3-S4>  In 2009, "Premier Guitar" reviewed the Komet 19, giving it a 5 out of 5 rating, praising the sound and the "astonishing workmanship".