Question: Are Courtney Taylor-Taylor and Nate Ruess both American singers?

Context paragraphs:
The Format: The Format was an American indie rock band formed by Nate Ruess and Sam Means.  The band announced a hiatus on February 4, 2008.  Their style can be considered a mixture of indie, alternative, punk and folk music, with elements of 1960s and 1970s pop music.  Though Means and Ruess are the foremost members of the band, they have played, toured, and recorded with Mike Schey, Mark Buzard, Don Raymond, and—for the DVD recording and summer 2007 tour—The Honorary Title's current drummer and The Format alumnus Adam Boyd.  The Format chose their name to make fun of the music industry's inclination towards a cookie-cutter "format" for a hit.

Just Give Me a Reason: "Just Give Me a Reason" is a song recorded by American singer and songwriter Pink, featuring fun. 's lead singer Nate Ruess.  The song was chosen as the third single from Pink's sixth studio album, "The Truth About Love" (2012).  Jeff Bhasker assisted the artists in writing the song and is also the producer.  "Just Give Me a Reason" is a pop ballad about the desire to hold on to a relationship even when it appears to be breaking down.  It starts off with a simple melody played on the piano, as Pink starts to sing the first verse and chorus, the latter of which introduces drum machines and bass.  Ruess then sings the second verse, and the rest of the song is sung as a duet.  The song ends with a piano solo, similar to the intro.  It has a duration of four minutes and two seconds.

Courtney Taylor-Taylor: Courtney A. Taylor (born July 20, 1967), known as Courtney Taylor-Taylor, is an American singer-songwriter from Portland, Oregon.  He is the lead singer and guitarist of alternative rock band The Dandy Warhols, a band he co-founded.  Taylor-Taylor has written the majority of the band's songs.

The Dandy Warhols: The Dandy Warhols are an American alternative rock band, formed in Portland, Oregon in 1994 by singer-guitarist Courtney Taylor-Taylor and guitarist Peter Holmström.  They were joined by keyboardist Zia McCabe and drummer Eric Hedford.  Hedford left in 1998 and was replaced by Taylor-Taylor's cousin Brent DeBoer.  The band's name is a play on the name of American pop artist Andy Warhol.

Nate Ruess: Nathaniel Joseph Ruess (born February 26, 1982) is an American singer and songwriter.  He is the lead singer of the indie pop band Fun. , and previously of The Format.  As of 2015, he also performs as a solo musician.

The Vanity Label: The Vanity Label is an American record label created by Nate Ruess and Sam Means of The Format, the label’s only signed artist (as of 2007).  The company was created by Ruess and Means subsequent the absorption of Elektra Records into Atlantic Records Group in 2004, as The Format was dropped from the newly formed Atlantic Records Group.  The newly formed Vanity Label was created to launch their then upcoming album, and Vanity Label’s first album release, "Dog Problems".

Grand Romantic: Grand Romantic is the debut studio album of Nate Ruess, lead vocalist from The Format and Fun.  It was released on June 16, 2015, by Fueled By Ramen.  The album was produced by Some Nights producer Jeff Bhasker.  Following the hiatus of Fun, Ruess announced that he would be working on material for a solo project.

Bohemian Like You: "Bohemian Like You" is a song by American alternative rock band The Dandy Warhols.  The song was written by frontman Courtney Taylor-Taylor after seeing a woman pull up in her car to the traffic lights outside his apartment.  It was released as the second single from the band's third studio album, "Thirteen Tales from Urban Bohemia", in August 2000.

The Marshall Mathers LP 2: The Marshall Mathers LP 2 is the eighth studio album by American rapper Eminem.  Aftermath Entertainment, Shady Records, and Interscope Records released the album on November 5, 2013.  It serves as a sequel to "The Marshall Mathers LP" (2000).  The album's production and its recording sessions were conducted from 2012 to 2013, involving Eminem himself, along with several record producers including Rick Rubin, Luis Resto, Emile Haynie, and Alex da Kid.  "The Marshall Mathers LP 2" features guest appearances from singers Skylar Grey, Rihanna, Nate Ruess, and rapper Kendrick Lamar.

Mark Englert: Mark Englert is an American musician known as a guitarist for Dramarama since 1982.  He has appeared with Dramarama on "Late Night with David Letterman" and "The Tonight Show".  He has worked with a number of established musicians including Benmont Tench from Tom Petty and The Heartbreakers, and Clem Burke of Blondie.  Mark a.k.a. "Mr. E. Boy", was a founding member of Hatful of Rain, a defunct band established in Portland, Oregon during the mid-1990s, which featured singer/songwriter John Lowery and at one time included Courtney Taylor-Taylor of The Dandy Warhols on drums.  The band went on to receive stellar reviews from critics around the globe, but failed commercially due to their short term run of just a few months prior to their break-up.  Mark has been known to play guitar for many underground artists and has recently put out a few of his own solo records on his own label Phat Boris Records.

Supporting paragraphs: Courtney Taylor-Taylor Nate Ruess
Answer: yes