Question: Collins & Harlan sang songs that presented a stereotyped image of who?

Context articles: Nurse stereotypes
Collins &amp; Harlan
Surinder Kaur
Lily of Laguna
Coon song
List of songs recorded by Ricky Martin
Twoubadou
Mark Ashley (musician)
Seturam Shrestha
Tomoe Tamiyasu

A stereotype is a generalized idea or image about a particular person or thing that is often oversimplified and offensive.
 Stereotypes are victim of prejudice when negative portrayals of a group are untrue of individual members.
 Nursing has been stereotyped throughout the history of the profession.
 A common misconception is that all nurses are female; this has led to the stereotype of male nurses as effeminate.
 These generalized ideas of the nursing profession have formed a skewed image of nurses in the media.
 The image of a nurse projected by the media is typically of a young white single female being over-sexualized as well as diminished intellectually; this idea is then portrayed in get-well cards, television shows and novels.
 The over-sexualized nurse is commonly referred to as a naughty nurse and is shown as a sex symbol or nymphomaniac. Along with these common stereotypes, studies have identified several other popular images used in media such as handmaiden, angel, torturer, homosexual male, alcoholic, buffoon and woman in white.
 Common stereotypes of nursing and portrayal of these misconceptions have fueled a discussion on the effects they have on the profession, harmful or good.
Collins & Harlan, the team of Arthur Collins and Byron G. Harlan formed a popular comic duet between 1903 and 1926.
 They sang ragtime standards as well as what were known as "Coon songs" – music sung by white performers in a black dialect.
 Their material also employed many other stereotypes of the time including Irishmen and farmers.
 Fellow recording artist Billy Murray nicknamed them "The Half-Ton Duo" as both men were rather overweight.
 Collins and Harlan produced many number one hits with recordings of minstrel songs such as "My Gal Irene", "I Know Dat I'll be Happy Til I Die", "Who Do You Love?"
 and "Down Among the Sugarcane".
 Their song "That Funny Jas Band from Dixieland", recorded November 8, 1916, is among the first recorded uses of the word "jas" which eventually evolved to "jass", and to the current spelling "jazz".
Surinder Kaur (25 November 1929 – 14 June 2006) was a Punjabi singer-songwriter.
 She sang mainly Punjabi folk songs, where she is credited for pioneering and popularising the genre and later was known as the 'Nightingale of Punjab'.
 She also sang songs in some Hindi movies as playback singer, between 1948 and 1952.
Lily of Laguna is a British coon song, a love song that originally included a racist and stereotyped image of black people.
 It was written in 1898 by English composer Leslie Stuart.
 It was a music hall favourite, performed notably by blackface performers such as Eugene Stratton and G. H. Elliott.
 In the early 1940s Ted Fio Rito wrote the tune of a new verse and Paul Francis Webster wrote fresh lyrics and it was stripped of its overtly racist lyrics to become a pure love song which continued to be popular into the 1950s.
Coon songs were a genre of music that presented a stereotyped image of Blacks.
 They were popular in the United States and the United Kingdom from around 1880 to 1920, though the earliest such songs date from minstrel shows as far back as 1848.
Puerto Rican singer Ricky Martin has recorded material for ten studio albums and sang songs in Spanish, English, Italian and Portuguese; he has also recorded bilingual tracks.
 He began his career at age of 12, in 1984, as a lead singer of the band Menudo.
 Five years later he left the band and pursued a solo career, releasing his debut eponymous studio album in 1991.
 On the Spanish record, he collaborated with various songwriters and composers; "Fuego Contra Fuego", the lead single, was written by Carlos Goméz and Mariano Perez, while on "El Amor de Mi Vida" he worked with Eddie Sierra.
 On the record, he also sang a Spanish version of Larry Williams' 1957 single "Bony Moronie", titled "Popotitos".
Twoubadou (] , French: "Troubadour" ) music is a popular genre of guitar-based music from Haiti that has a long and important place in Haitian culture.
 The word comes from "troubadour", a medieval poet-musician who wrote and sang songs about courtly love.
 Like the troubadours of old, the Haitian twoubadou is a singer-composer who accompanies himself on songs that tell about the bitterness and humor of love, often using risqué or suggestive lyrics.
Mark Ashley (born 1973) is a German singer.
 He was born in Apolda/Thuringia and currently lives in Bad Salzungen.
 He had always performed songs at Christmas for his parents, who were the first ones to notice his musical talent.
 Mark Ashley had already made several successful performances on radio and TV.
 The producer Steffen Ehrhardt discovered the singer, Mark Ashley, at the age of 13 in a German discothèque, where he sang songs of Modern Talking.
Seturam Shrestha (Devanagari: सेतुराम श्रेष्ठ) (1891-1941) was a Nepalese musician, singer and composer.
 He was an important figure in the development of modern music in Nepal at the beginning of the 20th century, and has been hailed as an Ustad.
 In addition to songs of love, Seturam sang songs with messages of social reform.
Tomoe Tamiyasu (民安 ともえ , Tamiyasu Tomoe , born March 20) is a Japanese voice actress and singer, generally performing for adult games, and is from Hiroshima, Japan.
 She debuted in 2005 as a voice actress and started her singing career in 2006.
 Tomoe has been the host of three Internet radio shows, and has been a guest on a fourth.
 She is also known under the name Tomoe Tamiya, such as when she voiced Rin Natsume from Key's visual novel "Little Busters!
".
 She also sang songs on an image vocal album released for "Little Busters!"
 for Rin.
 She attended Anime Expo in 2012 with the industry guest MangaGamer.
 She married voice actor Keisuke Nakamura in 2015.