The Pixies are an American alternative rock band formed in 1986 in Boston, Massachusetts.
 Until 2013, the band comprised Black Francis (lead vocals, rhythm guitar), Joey Santiago (lead guitar), Kim Deal (bass, backing vocals) and David Lovering (drums).
 The band disbanded acrimoniously in 1993, but reunited in 2004.
 After Deal left in 2013, the Pixies hired Kim Shattuck as a touring bassist; she was replaced the same year by Paz Lenchantin, who became a permanent member in 2016.
"Crackity Jones" is an alternative rock song by the American band Pixies, and is the ninth track on their 1989 album "Doolittle".
 Written and sung by the band's frontman Black Francis, "Crackity Jones" describes a crazed roommate and was inspired by Francis' stay in an apartment block with a "weirdo, psycho, gay roommate" in Puerto Rico as a student.
"Why Don't You & I" is a 2003 top ten hit by Santana.
 The song was written by Chad Kroeger and recorded for Carlos Santana's 2002 album "Shaman", on the Arista record label.
 The song was re-recorded in 2003 with vocals by Alex Band of The Calling, as the third single in the United States.
 It was released as the second single in Canada in the winter of 2003.
 The Chad Kroeger version was also released alongside the Alex Band version in the United States.
Paley & Francis is a studio album by Paley & Francis (Reid Paley and Black Francis), recorded in Nashville in September 2010, and released in the UK & Europe on October 10, 2011 on Cooking Vinyl, and in North America on October 11, 2011 on Sonic Unyon.
Mark Linkous (September 9, 1962 – March 6, 2010) was an American singer, songwriter and musician, best known as leader of Sparklehorse.
 He was also known for his collaborations with such notable artists as Tom Waits, PJ Harvey, Daniel Johnston, Radiohead, Black Francis, Julian Casablancas, Nina Persson, David Lynch, Fennesz, Danger Mouse, and Sage Francis.
Albert Band (May 7, 1924 – June 14, 2002) was an American film director and film producer.
 He was the son of artist Max Band, father of filmmaker Charles Band and of film composer Richard Band.
 He is the grandfather of Alex Band and Taryn Band.
"Velouria" is a song by the American alternative rock band Pixies, written and sung by the band's frontman Black Francis.
 "Velouria" is featured on their album "Bossanova", was the first single to be released from it and was the band's first UK Top 40 hit.
 The song features extensive use of theremin.
 It featured on the influential 1990 Madchester compilation album "Happy Daze".
"Letter to Memphis" is a single by the alternative rock band Pixies on the album "Trompe le Monde".
 The song has been described as a melancholy love song about a letter lead singer Black Francis failed to write.
 "Letter to Memphis" has been commended for being a song that "sticks in your mind", specifically the lyric "Trying to get to you."
 The song is supposed to be Francis' take on Chuck Berry's song "Memphis, Tennessee."
 An instrumental version was included as a B-side to "Alec Eiffel" and later became the closing track of their compilation "Complete 'B' Sides".
Charles Michael Kittridge Thompson IV (born April 6, 1965) is an American singer, songwriter and guitarist.
 He is best known as the frontman of the influential alternative rock band Pixies, with whom he performs under the stage name Black Francis.
 Following the band's breakup in 1993, he embarked on a solo career under the name Frank Black.
 After releasing two albums with record label 4AD and one with American Recordings, he left the label and formed a new band, Frank Black and the Catholics.
 He re-adopted the name Black Francis in 2007.
Alexander Max "Alex" Band (born June 8, 1981) is an American musician and singer-songwriter, best known for his work in his former band The Calling and their hit song "Wherever You Will Go", which topped the Adult Top 40 for 23 weeks.

Question: What do Alex Band and Black Francis have in common?
Answer: singer-songwriter