A lesson is a structured period of time where learning is intended to occur.^{[citation needed]} It involves one or more students (also called pupils or learners in some circumstances) being taught by a teacher or instructor. A lesson may be either one section of a textbook (which, apart from the printed page, can also include multimedia) or, more frequently, a short period of time during which learners are taught about a particular subject or taught how to perform a particular activity. Lessons are generally taught in a classroom but may instead take place in a situated learning environment.

In a wider sense, a lesson is an insight gained by a learner into previously unfamiliar subject-matter. Such a lesson can be either planned or accidental, enjoyable or painful. The colloquial phrase "to teach someone a lesson", means to punish or scold a person for a mistake they have made in order to ensure that they do not make the same mistake again.^{[citation needed]}

Lessons can also be made entertaining. When the term education is combined with entertainment, the term edutainment is coined.

Joseph "Joe" Satriani (born July 15, 1956) is an American instrumental rock guitarist of Italian origin, multi-instrumentalist and multiple Grammy Award nominee. Early in his career, Satriani worked as a guitar instructor, and some of his former students have achieved fame such as Steve Vai, Larry LaLonde, Rick Hunolt, Kirk Hammett, Andy Timmons, Charlie Hunter, Kevin Cadogan and Alex Skolnick. Satriani has been a driving force in music credited to other musicians throughout his career, as a founder of the G3 tour, as well as performing in various positions with other musicians.

In 1988, Satriani was recruited by Mick Jagger as lead guitarist for Jagger's first solo tour. In 1994, Satriani was the lead guitarist for Deep Purple. Satriani worked with a range of guitarists, including Steve Vai, John Petrucci, Eric Johnson, Larry LaLonde, Yngwie Malmsteen, Brian May, Patrick Rondat, Andy Timmons, Paul Gilbert, Adrian Legg, and Robert Fripp through the annual G3 Jam Concerts. He is currently the lead guitarist for the supergroup Chickenfoot. Since 1988, Satriani has been using his own signature guitar, the Ibanez JS Series, which is sold in music stores worldwide.

John Francis Anthony Pastorius III (December 1, 1951 – September 21, 1987), known as Jaco Pastorius, was an American jazz musician, composer, and electric bass player.

His playing style was noteworthy for containing intricate solos in the higher register and for the "singing" quality he achieved on the fretless bass. His innovations also included the use of harmonics. Pastorius suffered from mental illness including a substance-related disorder, and was diagnosed with bipolar disorder in 1982. He died in 1987 at age 35 following a violent altercation at a Fort Lauderdale bar.

Pastorius was inducted into the Down Beat Jazz Hall of Fame in 1988, one of only six bassists to be so honored (and the only electric bass guitarist). He is one of the most influential electric bass players of all time.

John Francis Pastorius III was born December 1, 1951 in Norristown, Pennsylvania to Jack Pastorius (big band singer and drummer) and Stephanie Katherine Haapala Pastorius, the first of their three children, Jaco Pastorius was of Finnish, German, Swedish and Irish ancestry.

John Taylor Gatto (born December 15, 1935) is a retired American school teacher with nearly 30 years experience in the classroom, and author of several books on education. He is an activist critical of compulsory schooling, of the perceived divide between the teen years and adulthood, and of what he characterizes as the hegemonic nature of discourse on education and the education professions.

Gatto was born in the Pittsburgh-area steel town of Monongahela, Pennsylvania. In his youth he attended public schools throughout the Pittsburgh Metro Area including Swissvale, Monongahela, and Uniontown as well as a Catholic boarding school in Latrobe. He did undergraduate work at Cornell, the University of Pittsburgh, and Columbia, then served in the U.S. Army medical corps at Fort Knox, Kentucky, and Fort Sam Houston, Texas. Following army service he did graduate work at the City University of New York, Hunter College, Yeshiva University, the University of California, Berkeley, and Cornell.

He worked as a writer and held several odd jobs before borrowing his roommate's license to investigate teaching. Gatto also ran for the New York State Senate, 29th District in 1985 and 1988 as a member of the Conservative Party of New York against incumbent David Paterson. He was named New York City Teacher of the Year in 1989, 1990, and 1991, and New York State Teacher of the Year in 1991. In 1991, he wrote a letter announcing his retirement, titled I Quit, I Think, to the op-ed pages of the Wall Street Journal, saying that he no longer wished to "hurt kids to make a living." He then began a public speaking and writing career, and has received several awards from libertarian organizations, including the Alexis de Tocqueville Award for Excellence in Advancement of Educational Freedom in 1997.

Eric Patrick Clapton, CBE, (born 30 March 1945) is an English guitarist and singer-songwriter. Clapton is the only three-time inductee to the Rock and Roll Hall of Fame: once as a solo artist, and separately as a member of The Yardbirds and Cream. Clapton has been referred to as one of the most important and influential guitarists of all time. Clapton ranked second in Rolling Stone magazine's list of the "100 Greatest Guitarists of All Time" and fourth in Gibson's Top 50 Guitarists of All Time.

In the mid 1960s, Clapton departed from the Yardbirds to play blues with John Mayall & the Bluesbreakers. In his one-year stay with Mayall, Clapton gained the nickname "Slowhand". Immediately after leaving Mayall, Clapton formed Cream, a power trio with drummer Ginger Baker and bassist Jack Bruce in which Clapton played sustained blues improvisations and "arty, blues-based psychedelic pop." For most of the 1970s, Clapton's output bore the influence of the mellow style of J.J. Cale and the reggae of Bob Marley. His version of Marley's "I Shot the Sheriff" helped reggae reach a mass market. Two of his most popular recordings were "Layla", recorded by Derek and the Dominos, another band he formed and Robert Johnson's "Crossroads", recorded by Cream. A recipient of seventeen Grammy Awards, in 2004 Clapton was awarded a CBE for services to music. In 1998, Clapton, a recovering alcoholic and drug addict, founded the Crossroads Centre on Antigua, a medical facility for recovering substance abusers.