Question: What country were Mark Linkous and Mark Wystrach singers of?

Context paragraphs:
Dreamt for Light Years in the Belly of a Mountain: Dreamt for Light Years in the Belly of a Mountain is the fourth and final album by Sparklehorse before Mark Linkous' death in 2010.  It was released on September 25, 2006 by Astralwerks Records.

Mark Linkous: Mark Linkous (September 9, 1962 – March 6, 2010) was an American singer, songwriter and musician, best known as leader of Sparklehorse.  He was also known for his collaborations with such notable artists as Tom Waits, PJ Harvey, Daniel Johnston, Radiohead, Black Francis, Julian Casablancas, Nina Persson, David Lynch, Fennesz, Danger Mouse, and Sage Francis.

Fox Crane: Fox Crane is a fictional character on the NBC/DirecTV soap opera "Passions" and was portrayed by Justin Hartley from December 17, 2002—February 10, 2006, and Mark Cameron Wystrach from February 14, 2006—September 7, 2007.  Actor Nick Stabile took over the role temporarily following the 2004 Summer Olympic Games (which preempted Passions for a few weeks), while Hartley's wife, fellow Passions star Lindsay Hartley was on maternity leave.  Fox, as played by Hartley, was a fan favorite amongst "Passions" viewers.

Midland (band): Midland is an American country music group consisting of Mark Wystrach (lead vocals), Cameron Duddy (bass guitar, background vocals), and Jess Carson (lead guitar, background vocals).  Their debut single, "Drinkin' Problem", reached the top 5 on the "Billboard" Country Airplay chart.  The album's second single, "Make a Little" released to country radio on September 25, 2017.

Mark Wystrach: Mark Wystrach (born December 17, 1979) is an American actor and country music singer.

In the Fishtank 15: In the Fishtank 15 is a collaborative EP by Sparklehorse and Christian Fennesz.  It is the fifteenth and most recent installment of the collaboration project by Konkurrent and the final release by Sparklehorse before the death of leader Mark Linkous in 2010.  Fennesz had previously appeared on Sparklehorse's 2006 album "Dreamt for Light Years in the Belly of a Mountain", and, following a number of live shows together, both artists felt that there was further mileage in the collaboration.  The EP was recorded in two days in December 2007 and released in September 2009.

All My Friends (EP): All My Friends is an EP by House of Freaks released on CD (R2 70943) and 12" vinyl (R1 70943) in 1989 by Rhino Records.  In 2004 these tracks were remastered and included on the reissue of the album Tantilla.  Recording occurred at Floodzone Studios in Richmond, VA.  The Album's cover is a collage of photos consisting of friends and acquaintances of band members Bryan Harvey and Johnny Hott.  Included in the collage, above the EP's title is Sparklehorse founder Mark Linkous, who at times performed with House of Freaks.

Leave Them Boys Alone: "Leave Them Boys Alone" is a song recorded by American country music artist Hank Williams Jr. with Waylon Jennings and Ernest Tubb.  It was released in May 1983 as the second single from Williams' album "Strong Stuff".  The song reached number 6 on the "Billboard" Hot Country Singles chart.  It was written by Williams, Dean Dillon, Gary Stewart and Tanya Tucker.  The song is notable for its combination of two singers associated with the outlaw movement with a country legend from the honky tonk days and golden age of the Grand Ole Opry.  Outlaw singers like Williams and Jennings saw themselves as taking country music back to its raw, honky tonk roots, and recording an up tempo song with Tubb (who would never have received radio airplay in the late 1970s and early 80's) and reaching #6 was a slap in the face to the proponents of the country pop sound.  The lyrics of the song, much like Williams' "Family Tradition" echo the sentiment that the outlaw singers and their current escapades were predated by the hard living honky tonkers of the 1950s such as Hank Williams, Sr. and Ernest Tubb, prior to the music being fairly taken over by the Nashville Sound in the 1960s.

Sparklehorse: Sparklehorse was an American indie rock band, led by the singer and multi-instrumentalist Mark Linkous and active between the years 1995 to 2010.  In 2010, Linkous committed suicide.

Fear Yourself: Fear Yourself is a 2003 album by Daniel Johnston.  It's his 15th album and is produced by Mark Linkous of Sparklehorse.  It includes an 8-page booklet with exclusive Daniel Johnston drawings.

Supporting paragraphs: Mark Linkous Mark Wystrach
Answer: American singer