Question: How did the female American rock singer and songwriter, which inspired Sexy Ester and the Pretty Mama Sisters' early music, die?

Context articles: Elizabeth Schall
Heather Baker
Janis Joplin
Medieval folk rock
Aaron A. Brooks
Heather Duby
Zap Mama
Angels Never Die
Suga Mama
Sexy Ester and the Pretty Mama Sisters

Elizabeth Schall is a female American singer, songwriter and guitarist, and founder of the death metal band Dreaming Dead.
 Prior to that, she was a guitarist of the all-female tribute band The Iron Maidens and the death metal band Winterthrall.
 She is married to fellow death metal musician Leon del Muerte.
Heather Baker (born October 9, 1984) is a female American songwriter, guitarist, producer and founder of the Electronica band Antiwave.
 Heather is known for being a session and touring guitar player for the likes of Bonnie Mckee (Pulse Music Publishing), Krewella (Columbia Records), Kerli (Island Records), The Iron Maidens (Powerslave Records) and currently plays with the band Fake Figures (members of Atreyu, Eyelid and Scars of Tomorrow) and NoMBe (TH3RD BRAIN)
Janis Lyn Joplin ( ; January 19, 1943 – October 4, 1970) was an American rock singer and songwriter.
 She was one of the biggest female rock stars of her era.
 After releasing three albums, she died of a heroin overdose at age 27.
 A fourth album, "Pearl", was released in January 1971, just over three months after her death.
 It reached number one on the "Billboard" charts.
Medieval folk rock, medieval rock or medieval folk is a musical subgenre that emerged in the early 1970s in England and Germany which combined elements of early music with rock music.
 It grew out of the British folk rock and progressive folk movements of the later 1960s.
 Despite the name, the term was used indiscriminately to categorise performers who incorporated elements of medieval, renaissance and baroque music into their work and sometimes to describe groups who used few, or no, electric instruments.
 This subgenre reached its height towards the middle of the 1970s when it achieved some mainstream success in Britain, but within a few years most groups had either disbanded, or were absorbed into the wider movements of progressive folk and progressive rock.
 Nevertheless, the genre had a considerable impact within progressive rock where early music and medievalism in general, was a major influence and through that in the development of heavy metal.
 More recently medieval folk rock has revived in popularity along with other forms of medieval inspired music such as Dark Wave orientated neo-Medieval music and medieval metal.
Aaron A. Brooks, also known as, Aaron Kinsley-Brooks (born January 24, 1964, San Francisco, California) is an American rock musician, drummer, producer and composer.
 He co-founded The Little Death with Moby, Laura Dawn and Daron Murphy.
 He is a founding member of the American alternative rock band, The Mars Bonfire.
 Aaron also plays or has played drums for the electronic pop band Leisure Cruise; Grammy nominated electro-pop chanteuse Angela McCluskey (of Télépopmusik and Wild Colonials); Grammy award-winning producer/songwriter Mark Hudson; Emmy award-winning actress and singer Jackie Cruz; Grammy award-winning artist Moby; Singer/songwriter and progressive political activist Laura Dawn; Grammy award-winning bassist/songwriter and rock musician Duff McKagen of Guns N' Roses; Circle of Soul; Erin Evermore; Grammy award-winning pianist and songwriter A.J. Croce; Grammy winning singer/songwriter Lana Del Ray; Writer, radio host, progressive political comic and guitarist/singer Jamie Kilstein and his band The Agenda; Model/actress/singer/songwriter Heidi Merrill; And NY based rock singer Carleigh Jade.
Heather Duby (born July 26, 1974 in Eugene, Oregon), is a female American singer/songwriter.
Zap Mama is the music act of Belgian artist Marie Daulne.
 Zap Mama sings polyphonic and Afro-Pop music; a harmonic music with a mixture of infused African vocal techniques, Urban, Hip-Hop with emphasis on voice.
 The worldwide success of Zap Mama, and an ensemble of female polyphonic singers, inspired influences in American Hip Hop, Nu-Soul, Jazz and elements of Pop.
 The evolving musical compositions created a diverse band of singers and musicians for Zap Mama.
Angels Never Die is the fourth solo album of the German female hard rock singer Doro Pesch.
 The album was released in February 1993 and was produced by Jack Ponti and Vic Pepe.
 The two producers had worked with Alice Cooper on the hit single "Hey Stoopid" and had produced minor glam metal bands like Surgin’ and Baton Rouge.
 The sound and musical style of "Angels Never Die" is very similar to what can be heard on the second Doro solo album, alternating heavy rock tracks with large choruses and power ballads, in the vein of the declining glam metal that had dominated the American rock charts for the first part of the decade.
"Suga Mama" is a song by American singer Beyoncé Knowles for her second studio album, "B'Day" (2006).
 It was written by Knowles, Rich Harrison, and Makeba Riddick, and produced by Harrison and Knowles.
 "Suga Mama" is influenced by 1970s funk and rock music.
 An R&B and soul song, "Suga Mama" is built on a hip hop and jazzy beat, and samples Jake Wade and the Soul Searchers' song "Searching for Soul", written by Chuck Middleton.
 Lyrically, it features the female protagonist willing to pay large sums of money to keep her love interest contented.
Sexy Ester is a musical group out of Madison, Wisconsin, consisting of Lyndsay Evans (lead vocals), Adam Eder (guitar), Roscoe Evans (keyboard), Paul Kennedy (drums), and Brad Schubert (bass guitar) The earliest roots of the band go back to 2002 when Lyndsay Evans, Adam Eder, Ken Hale, and Travis Smith formed a group known as Nefarious Star and the Wyrms.
 This band contained members of the defunct band Vampyres Sleep in the Shade (formerly Nimbus) along with powerhouse vocalist Lyndsay Evans.
 The early music was inspired by the classic rock sounds of bands like Led Zeppelin and Janis Joplin.
 In 2003 the group would move from the small town of Warren, Illinois leaving behind Smith.