Sarah Ann McLachlan, OC, OBC (born January 28, 1968) is a Canadian musician, singer and songwriter. Known for her emotional ballads and mezzo-soprano vocal range, as of 2009, she has sold over 40 million albums worldwide. McLachlan's best-selling album to date is Surfacing, for which she won two Grammy Awards (out of four nominations) and four Juno Awards. In addition to her personal artistic efforts, she founded the Lilith Fair tour, which showcased female musicians. The Lilith Fair concert tours took place from 1997 to 1999, and resumed in the summer of 2010. Since 2006 she has also been known as a highly visible supporter of the ASPCA, as well as various other charities.

Sarah McLachlan was born on January 28, 1968, and adopted in Halifax, Nova Scotia, Canada. As a child, she took voice lessons, along with studies in classical piano and guitar. When she was 17 years old and still a student at Queen Elizabeth High School, she fronted a short-lived rock band called The October Game. One of the band's songs, "Grind", credited as a group composition, can be found on the independent Flamingo Records release Out of the Fog and the CD Out of the Fog Too. It has yet to be released elsewhere. Her high school yearbook predicted that she was "destined to become a famous rock star."

Sheryl Suzanne Crow (born February 11, 1962) is an American singer-songwriter, record producer, musician, and actress. Her music incorporates elements of rock, folk, hip hop, country and pop. She has won nine Grammy Awards from the National Academy of Recording Arts and Sciences.

She has performed with The Rolling Stones and has sung duets with Mick Jagger,Michael Jackson, Eric Clapton, Luciano Pavarotti, John Mellencamp, Kid Rock, Michelle Branch, and Sting among others. She has performed backing vocals for Tina Turner, Michael Jackson, Don Henley and Belinda Carlisle. She also sang as part of the back up vocals for the Bob Dylan 30th Anniversary celebrating Dylan's 30 years as a recording artist. Crow has released seven studio albums, two compilations, and a live album, and has contributed to film soundtracks. She has sold 16 million albums in the United States and 35 million albums worldwide and her newest album, 100 Miles from Memphis, was released on July 20, 2010. Recently she appeared on NBC's 30 Rock, ABC's GCB and Cougar Town, Disney Channel's Hannah Montana Forever, and Jon Stewart and Stephen Colbert's Rally to Restore Sanity and/or Fear.