Adult contemporary music (AC) is a broad style of popular music, ranging from 1950s and 1960s vocal music to predominantly ballad-heavy music with varying degrees of rock influence. The term is also used to describe or categorize radio formats that play such music.

AC radio plays mainstream music, excluding "hip hop", "heavy metal", youth-oriented "hard rock", some "teen pop" music and rhythmic "dance tracks" as they are less popular amongst the target demographic of these radio stations, which is intended for an adult audience. Radio stations playing this format will often target the 18–54 age group, also the demographic that has received the most attention from advertisers since the 1960s.

Over the years, AC has spawned numerous sub-genres: "hot AC", "soft AC" (also known as "lite AC"), "modern AC", "urban AC", "rhythmic AC", "smooth AC" (i.e., smooth jazz), and "Christian AC" (i.e., a softer type of Contemporary Christian music). Some radio stations play only "hot AC", whilst some play only "soft AC"; and then there are others that explicitly play a variety of sub-genres. Therefore, it is not usually considered a specific genre of music; it is merely an assemblage of selected tracks from musicians of many different genres.

Contemporary classical music can be understood as belonging to the period that started in the mid-1970s with the retreat of modernism. However, the term may also be employed in a broader sense to refer to all post-1945 modern musical forms.

Generally "contemporary classical music" amounts to:

At the beginning of the 20th century, composers of classical music were experimenting with an increasingly dissonant pitch language, which sometimes yielded atonal pieces. Following World War I, as a backlash against what they saw as the increasingly exaggerated gestures and formlessness of late Romanticism, certain composers adopted a neoclassic style, which sought to recapture the balanced forms and clearly perceptible thematic processes of earlier styles; see also New Objectivity and Social Realism). After World War II, modernist composers sought to achieve greater levels of control in their composition process (e.g., through the use of the twelve tone technique and later total serialism). At the same time, conversely, composers also experimented with means of abdicating control, exploring indeterminacy or aleatoric processes in smaller or larger degrees. Technological advances led to the birth of electronic music. Experimentation with tape loops and repetitive textures contributed to the advent of minimalism. Still other composers started exploring the theatrical potential of the musical performance (performance art, mixed media, fluxus).

Sir Elton Hercules John, CBE (born Reginald Kenneth Dwight on 25 March 1947) is an English rock singer-songwriter, composer, pianist and occasional actor. He has worked with lyricist Bernie Taupin as his songwriter partner since 1967; they have collaborated on more than 30 albums to date.

In his four-decade career John has sold more than 250 million records, making him one of the most successful artists of all time. His single "Candle in the Wind 1997" has sold over 33 million copies worldwide, and is the best selling single in Billboard history. He has more than 50 Top 40 hits, including seven consecutive No. 1 US albums, 56 Top 40 singles, 16 Top 10, four No. 2 hits, and nine No. 1 hits. He has won six Grammy Awards, four Brit Awards, an Academy Award, a Golden Globe Award and a Tony Award. In 2004, Rolling Stone ranked him Number 49 on its list of the 100 greatest artists of all time.

John was inducted into the Rock and Roll Hall of Fame in 1994. Having been named a Commander of the Order of the British Empire in 1996, John received a knighthood from Queen Elizabeth II for "services to music and charitable services" in 1998.

Denny Jiosa is a United States jazz/blues guitarist/composer who has received four Grammy nominations for his recording engineering work.

Jiosa was born in Huntington, Indiana. He began playing guitar at the age of 7 and later toured with bands such as Troy Shondell's, before moving to Los Angeles and taking lessons from Frank Gambale.

Jiosa now lives in Nashville, Tennessee. His most popular single, Lights of the City, garnered a SESAC national airplay award^{[citation needed]}. He released his sixth contemporary jazz CD, "Dreams Like This" in 2008, with his earlier albums being "body2body","Among Friends," "Jazzberry Pie," "Moving Pictures" and "Inner Voices."

Jiosa has worked on four Grammy nominated projects both as a guitarist and engineer/producer: three while working with Yolanda Adams and one for Polka great, LynnMarie.

1. Evening Drive
2. Per Mi Amore
3. Cruising For Bruising
4. Moving Pictures
5. Greta Got A New Dress
6. Miles To Monaco
7. April's Foolish Day
8. All My Love
9. I'll Take You There
10. Aarau
11. Friends

Jim Brickman (born November 20, 1961) is an American songwriter and pianist. He has been named the most charted male Adult Contemporary artist to date, with six of his albums receiving Gold and Platinum status. He is known for his solo piano compositions, pop-style instrumentals, and vocal collaborations with artists such as Michael W. Smith, Martina McBride, Donny Osmond, Delta Goodrem, Misha Omar, Olivia Newton-John, Lady Antebellum, and others. He earned a Grammy nomination in 2003, SESAC "Songwriter of the Year" award, Canadian Country Music Award for "Best Vocal/ Instrumental Collaboration", and a Dove Award presented by the Gospel Music Association. His CD entitled Faith has been nominated for a 2010 Grammy Award for Best New Age Album.

Since 1997, he has hosted his own radio show called Your Weekend with Jim Brickman, which is carried on radio stations throughout the United States. Brickman has also released three PBS specials, and hosts an annual fan cruise. He is founder of Brickhouse Direct, a company that provides strategic marketing and e-commerce solutions for clients in a variety of industries.