Happy Birthday is the fourth mixtape released by British rapper Tinie Tempah.
 The mixtape was released for free download on December 16, 2011 on Disturbing London Records - featuring production from 3Mindz, S-X, Wizzy Wow and Stargate.
 The mixtape title is "Happy Birthday" because the mixtape came into production around Tempah's 23rd birthday (November 7).
 Tracks "Like It or Love It", "Lucky Cunt" and "Till I'm Gone (Remix)" were leaked prior to the mixtape release to create buzz, with "Like It or Love It" receiving minor radio airplay.
 "Happy Birthday" features British rappers Chipmunk, Giggs, Wretch 32, G-Frsh, Tinchy Stryder and Krept and Konan, including a variety of American rappers; Soulja Boy, J. Cole and Big Sean, along with Wiz Khalifa, Pusha T and Jim Jones on the "Till I'm Gone" remix (originally released on August 29, 2011).
 British vocalist J. Warner also makes a guest appearance.
Happy Birthday is the debut album by the British new wave band Altered Images.
 Released in 1981, the album's title track, "Happy Birthday", became the band's biggest hit, peaking at number 2 in the UK in October of that year.
Happy Birthday to You!
 is a 1959 children's book by Dr. Seuss.
 It deals with a fantastic land called Katroo, where the Birthday Bird throws the reader an amazing party on their special day.
 It consists of a running description of a fantastical celebration, narrated in the second person, of the reader's birthday, from dawn to late night.
 The celebration includes fantastical and colorful gifts, foods and a whirl of activities all arranged by the Birthday Bird for the reader's birthday.
 It focuses on the reader's self-actualization and concludes with the happy and exhausted reader falling blissfully asleep.
 A popular Seuss paragraph in this book reads: "Today you are you, that is truer than true.
 There is no one alive who is youer than you."
"Happy Birthday Darlin' is a song written by Chuck Howard, and recorded by American country music artist Conway Twitty.
 It was released in October 1979 as the third and final single from his album "Cross Winds".
 "Happy Birthday Darlin'" was Conway Twitty's 23rd number one on the country chart as solo artist.
 The single stayed at number one for three weeks and spent a total of 11 weeks on the country chart.
"Happy Birthday to You", more commonly known as simply "Happy Birthday", is a song that is traditionally sung to celebrate the anniversary of a person's birth.
 According to the 1998 "Guinness World Records", "Happy Birthday to You" is the most recognized song in the English language, followed by "For He's a Jolly Good Fellow".
 The song's base lyrics have been translated into at least 18 languages.
 The melody of "Happy Birthday to You" comes from the song "Good Morning to All", which has traditionally been attributed to American sisters Patty and Mildred J. Hill in 1893, although the claim that the sisters composed the tune is disputed.
Happy Happy Birthday To Me Records is an American independent record label based in Athens, Georgia.
 Its catalogue was originally heavily weighted towards twee indie pop music, with several of its bands being associated with or influenced by The Elephant 6 Recording Company.
 The label originally began as a compilation CD, "Happy Happy Birthday To Me Volume 1", before it expanded into a 7" singles club, which released records by, among others, Of Montreal, Marshmallow Coast, The Essex Green, Great Lakes and Masters of the Hemisphere, while also releasing several tape and CD compilations.
 The singles club was noted for its individuality, with each individual record by an artist often being different.
 For example, each copy of The Essex Green's single came with a different original photograph on the sleeve, while Marshmallow Coast's were hand-drawn by school children.
 The label then began to release full-length CDs for the first time, the first of these being Birddog's "A Sweet and Bitter Fancy".
 The label also continued to release 7"s, compilations and T-shirts, as well as a video compilation DVD, and a further singles club featuring Bunnygrunt, Casper and the Cookies, and Andy From Denver.
 There are currently over 150 releases on the label, and an even larger catalogue of distributed titles.
 Today, its catalogue has expanded to span several genres.
"Happy Birthday Sweet Sixteen" is a pop song released in 1961 by Neil Sedaka.
 Sedaka wrote the music and performed the song, while the lyrics were written by Howard Greenfield.
 The song is noted for being similar in musical structure to Take Good Care of My Baby by Bobby Vee (another 1961 hit), and additionally for its resemblance to the melody of the Chiffons' subsequent 1963 hit "One Fine Day".
 Both of these songs exhibiting similarity to "Happy Birthday Sweet Sixteen" were penned by the team of Carole King and Gerry Goffin.
 The song reached #6 on the "Billboard" Hot 100 chart and no 3 on the UK Singles Chart.
Mildred Jane Hill (June 27, 1859 – June 5, 1916) was an American songwriter and musicologist, who composed the melody for "Good Morning to All", later used as the melody for "Happy Birthday to You".
"Happy, Happy Birthday Baby" is a 1957 song written by Margo Sylvia & Gilbert Lopez.
 "Happy, Happy Birthday Baby" was originally performed by The Tune Weavers, who had their only hit with this song.
 Both Margo Sylvia and Gilbert Lopez were members of The Tune Weavers.
 The single went to number four on the R&B chart and went to number five on the Hot 100.
 The B-side of "Happy, Happy Birthday Baby, was The Tune Weavers version of "Ol' Man River"
"Happy Birthday" is a 1980 song and by The Boys Next Door.
 It was released as a single on 16 February 1980 on Missing Link.
 The song is not related to the popular birthday song "Happy Birthday to You".
 The first album it appeared on was "The Birthday Party".
 It was later included as track two on the 1992 compilation "Hits".

Question: "Happy Birthday to You", more commonly known as simply "Happy Birthday", is a song that is traditionally sung to celebrate the anniversary of a person's birth, the melody has traditionally been attributed to American sisters Patty and Mildred Jane Hill, an American songwriter and musicologist, in what year?
Answer: 1893