Question: Which college did the featured guitar artist in "All to Myself" attend?

Context paragraphs:
Jennifer Brantley: Jennifer Brantley is a country and Americana singer/songwriter in Nashville, TN.  She has released three CD's, "The Other Side," Break Down, " produced by Grammy Award winner Bil VornDick, (Alison Kraus, Bela Fleck).  This CD also featured guitar player Johnny Hiland.  "The Little Things" was produced by Johnny Neel, formally of the Allman Brothers Band.

Lead guitar: A lead guitar is a guitar part which plays melody lines, instrumental fill passages, guitar solos, and occasionally, some riffs within a song structure.  The lead is the featured guitar, which usually plays single-note-based lines or double-stops.

John Heussenstamm: John Heussenstamm (born December 28, 1953) is an American guitarist and music educator.  He is credited, early in his career, as being the original lead guitarist in the Surf Punks, touring with the Deniece Williams Band in 1977, and being a band member of Innocent Bystanders.  He is the author of "Guitar Workout", a book published by Hal Leonard Corporation in 2010.  He is featured as an author and guitarist in "The Gold Mine Series", as a coauthor with Chad Johnson in "100 Blues Lessons" and with Paul Silbergleit in "100 Jazz Lessons".  Heussenstamm was also a featured guitar instructor in three DVDs published by Hal Leonard: "200 Blues Licks", "200 Jazz Licks" and "200 Country Licks".  His YouTube channel has received over 10 million total hits and has over 15,000 subscribers since 2008.  As of February 2015, Heussenstamm resides in Laguna Beach, California.

Johnny Hiland: Johnny Hiland (born January 18, 1975) is a legally blind American musician/guitar artist known for mixing chicken pickin' country guitar with rock, blues, and western swing!"

Dovetail Joint (band): Dovetail Joint was a rock band that formed in Chicago, Illinois in 1992.  The band featured guitar/vocalist Charles Gladfelter, guitarist Robert Byrne, bassist Jon Kooker, and drummer Joe Dapier.  After several years of playing locally, as well as independently releasing their self-titled album in 1995, the band started to garner interest after their song "Level on the Inside" was featured on an annual compilation disc of local radio station WKQX Q101.  Columbia Records quickly signed the band and released "001" in early 1999.  "Level" turned out to be the band's only commercial hit, and Columbia dropped the band before releasing a second album.  However, an independently released EP was released in 2002 which would turn out to be their last.

The Blue Nile: The Blue Nile is a musical group from Glasgow, Scotland.  The group's early music was built heavily on synthesizers and electronic instrumentation and percussion, although later works featured guitar more prominently.  Following early championing by established artists such as Rickie Lee Jones and Peter Gabriel (both of whom the band later worked with), the Blue Nile gained critical acclaim, particularly for their first two albums "A Walk Across the Rooftops" and "Hats", and some commercial success in both the UK and the US, which led to the band working with a wide range of musicians from the late 1980s onwards.  The band members have also gained a reputation for their avoidance of publicity, their idiosyncratic dealings with the recording industry, and their perfectionism and slow work rate which has resulted in the release of just four albums since the group's formation in 1981.  The group appears to have disbanded since the release of their fourth album "High" in 2004, although there has never been any official confirmation that this is fact.

All to Myself (Guy Sebastian song): "All to Myself" is the third single from Guy Sebastian's fifth album "Like It Like That".  John Mayer is featured playing guitar in the song.  The single's B-sides are both covers of Michael Jackson songs.  "All to Myself" was shortlisted for the 2011 APRA Song of the Year.  A music video was produced to promote the single.

George Karafotis: George Karafotis is a Greek guitar player for the band Raven Lord.  He also appears in other projects like Vermillion Days and Operation X .  George was in the support band Vermillion Days who opened up for Sodom, Tankard, Flotsam & Jetsam, Suicidal Angels & Crystal Tears.  He is also featured in Ian Parry's promotional video for the Consortium Project album, "Species", as the playback guitar artist.This video also features Casey Grillo (Kamelot) on drums.

Hamer Guitars: Hamer Guitars is an American manufacturer of electric guitars founded in 1973, in Wilmette, Illinois, by vintage guitar shop owners Paul Hamer, Jol Dantzig James Walker and John Montgomery.  The company's early instruments featured guitar designs based on the Gibson Explorer (The Standard) and Gibson Flying V (Vector), before adding more traditional Gibson-inspired designs such as the Sunburst.  Hamer Guitars is generally considered the first "boutique" electric guitar brand that specifically catered to professional musicians, and was one of the first guitar manufacturers to produce a 12 string bass guitar.

John Mayer: John Clayton Mayer ( ; born October 16, 1977) is an American singer-songwriter, guitarist, and producer.  He was born in Bridgeport, Connecticut, and raised in nearby Fairfield.  He attended Berklee College of Music in Boston, but disenrolled and moved to Atlanta in 1997 with Clay Cook.  Together, they formed a short-lived two-man band called Lo-Fi Masters.  After their split, Mayer continued to play local clubs—refining his skills and gaining a following.  After his appearance at the 2001 South by Southwest Festival, he was signed to Aware Records, and then Columbia Records, which released his first EP, "Inside Wants Out".  His following two full-length albums—"Room for Squares" (2001) and "Heavier Things" (2003)—did well commercially, achieving multi-platinum status.  In 2003, he won the Grammy Award for Best Male Pop Vocal Performance for the single "Your Body Is a Wonderland".

Supporting paragraphs: All to Myself (Guy Sebastian song) John Mayer
Answer: Berklee College of Music in Boston