ManuElla
Manuella Brečko( born 31 January 1989), better known as ManuElla, is a Slovenian singer, songwriter and music producer.
She represented Slovenia in the Eurovision Song Contest 2016 with the song" Blue and Red.
Theodore F. Morse
Theodore F. Morse (April 13, 1873 – May 25, 1924) was an American composer of popular songs.
Born in Washington D.C., Morse was educated at the Maryland Military & Naval Academy.
He went on to study both violin and piano.
He and his wife, Theodora Morse, became a successful songwriting team for Tin Pan Alley.
Listed as Terriss & Morse, they were one of the earliest Tin Pan Alley husband-wife songwriting teams.
Morse died in New York City.
Blue Feather
"Blue Feather" is a popular song written in 1909 with music by Theodore F. Morse and lyrics by Jack Mahoney.
In the song the singer is expressing his love for sweet Blue Feather.
The chorus is:
Alonso Mudarra
Alonso Mudarra( c. 1510 – April 1, 1580) was a Spanish composer of the Renaissance, and also played the vihuela, a guitar- shaped string instrument.
He was an innovative composer of instrumental music as well as songs, and was the composer of the earliest surviving music for the guitar.
Michelangelo Faggioli
Michelangelo Faggioli( 1666–1733) was an Italian lawyer and celebrated amateur composer of humorous cantatas in Neapolitan dialect.
A founder of a new genre of Neapolitan comedy, he was the composer of the opera buffa" La Cilla" in 1706.
Walter Robinson (composer)
Walter Robinson is an African American composer of the late 20th century.
He is most notable for his 1977 song" Harriet Tubman", which has been recorded by folk musicians such as Holly Near, John McCutcheon, and others.
He is also the composer of several operas.
Alexandru Cristea
Alexandru Cristea( 1890 – 1942) was the composer of the music for" Limba Noastră", current national anthem of Moldova.
Pixie Williams
Pikiteora Maude Emily Gertrude Edith" Pixie" Williams( married name Costello, 12 July 1928 – 2 August 2013) was a New Zealand singer best known for the song" Blue Smoke", recorded in 1949.
In 2019, she was inducted into the New Zealand Music Hall of Fame.
Petrus de Domarto
Petrus de Domarto( fl. c. 1445– 1455) was a Franco- Flemish composer of the Renaissance.
He was a contemporary and probable acquaintance of Ockeghem, and was the composer of at least one of the first unified mass cycles to be written in continental Europe.
Alexander Courage
Alexander Mair" Sandy" Courage Jr.( December 10, 1919
May 15, 2008) was an American orchestrator, arranger, and composer of music, primarily for television and film.
He is best known as the composer of the theme music for the original" Star Trek" series.

Question: Which country the composer of song Blue Feather is from?
Answer: American