Daniel John Tyminski (born June 20, 1967) is an American bluegrass singer-songwriter, musician, composer, vocalist, and instrumentalist.

[2] He is known for his updated version of the song "Man of Constant Sorrow," which was featured in the movie O Brother, Where Art Thou?

The guitar, named Martin D-28 Dan Tyminski Custom Edition, was issued with its own distinctive details to appeal to flatpickers.

[7] At the Ultra Music Festival 2013, he premiered a new single, "Hey Brother", as part of a country-electronic collaboration with Swedish producer Avicii.

The song was a Top 5 hit in more than 15 countries, including Australia, Austria, Belgium, Denmark, Finland, Germany, the Netherlands, New Zealand, Norway, Sweden, Switzerland, Slovakia, Macedonia and the United Kingdom.