Question: Are Lacey Sturm and Philip Bailey known for being American singers?

Context articles: New Horizons (Flyleaf album)
Soul on Jazz
Philip Bailey
Sailaway
Philip Bailey (album)
Easy Lover
The Best of Philip Bailey: A Gospel Collection
Lacey Sturm
Between the Stars
Life Screams

New Horizons is the third full-length studio album by American rock band Flyleaf, released on A&M/Octone Records on October 30, 2012.
 It was produced by Howard Benson, who has produced several of Flyleaf's previous recordings.
 It is the final album with lead vocalist Lacey Sturm, who announced her departure from the band, just prior to the album's release, in October 2012.
Soul on Jazz is a 2002 album by Philip Bailey which was released on Heads Up International Records.
 On the album, Bailey covered Thelonious Monk's "Ruby, My Dear", Earth, Wind & Fire's "Keep Your Head to the Sky", Joe Zawinul's "Mercy, Mercy, Mercy", Gene McDaniels's "Compared to What" and Herbie Hancock's "Tell Me a Bedtime Story".
Philip Irvin Bailey (born May 8, 1951) is an American R&B, soul, gospel and funk singer, songwriter, percussionist and actor, best known as an original member, and one of the two lead singers (along with group founder Maurice White) of the band Earth, Wind & Fire.
 Noted for his four-octave vocal range and distinctive falsetto register, Bailey has won seven Grammy Awards.
 He was inducted into the Rock and Roll Hall of Fame and the Vocal Group Hall of Fame as a member of Earth, Wind & Fire.
 Bailey was also inducted into the Songwriters Hall of Fame for his work with the band.
Sailaway is a song by the American R&B band Earth, Wind & Fire, written by Philip Bailey, Eduardo del Barrio, Maurice White and Roxanne Seeman.
 It was recorded during the Faces sessions in 1980 and appears on the album.
 In June 1999, Philip Bailey featured a jazz version of “Sailaway” under the title “Sail Away” on his Dreams album.
Philip Bailey is the self-titled 1994 album by American R&B and soul singer Philip Bailey.
 It is Bailey's seventh solo album and features many other artists.
 Production credits go to Chuckii Booker, Brian McKnight and PM Dawn.
"Easy Lover" is a song performed by Philip Bailey, of Earth, Wind & Fire, and Phil Collins and jointly written and composed by Bailey, Collins, and Nathan East.
 The song appeared on Bailey's solo album "Chinese Wall."
 Collins has performed the song in his live concerts and it appears on both his 1990 album "Serious Hits... Live!
" and his 1998 compilation album, "...Hits."
The Best of Philip Bailey: A Gospel Collection is a 1991 compilation gospel album by Philip Bailey which was released on the Word Records label.
Lacey Nicole Sturm (née Mosley, born September 4, 1981) is an American singer and songwriter from Homestead, Florida, raised in Arlington, Texas.
 She is co-founder and former lead vocalist of the hard rock band Flyleaf.
 In February 2016, Sturm became the first solo female to top the "Billboard" Hard Rock Albums chart with her debut release.
Between the Stars is the fourth full-length studio album by American rock band Flyleaf.
 The album was released on September 16, 2014 through Loud & Proud Records.
 The group funded the album through PledgeMusic.
 It marks the group's first and only record to feature Kristen May on vocals, who replaced original vocalist Lacey Sturm who exited the band in 2012.
 May exited the band in 2016.
 It is the group's first album to be recorded by producer Don Gilmore.
 Studio recording was completed in Los Angeles, CA.
 The album's lead single "Set Me on Fire" debuted on July 1, 2014 at Revolver.
Life Screams is the debut solo studio album by the American singer Lacey Sturm.
 It was released on February 12, 2016 through Followspot Records.
 The album has sold 9,000 copies in the United States.