Kay performing on the 2010 Warped Tour.
|Birth name||Sierra Kay Kusterbeck|
|Born||December 18, 1990|
St. Petersburg, Florida, U.S.
|Genres||Alternative rock, experimental rock|
|Labels||Fueled by Ramen|
|Associated acts||Blake Harnage Nick Fit|
Kusterbeck was born and raised in St. Petersburg, Florida. She began taking vocal lessons in the third grade. She attended the arts-centric PCCA Gibbs High School in St. Petersburg for three years as a Musical Theatre major, but dropped out of high school to pursue music as a career.
Kusterbeck auditioned to be VersaEmerge's lead vocalist in 2006, by sending a tape of herself singing one of VersaEmerge's songs, "The Blank Static Screen".
VersaEmerge released their first EP with Kusterbeck on vocals, Perceptions, in May 2008. They were signed to Fueled by Ramen in 2008, and they released their self-titled EP in 2009 and their debut album Fixed at Zero the following year.
In 2016, Kay along with Nick Fit of Trash Talk started the band Neaux. Described as a Indie/post-punk band, they released their debut album "Fell Off The Deep End" in 2016.
In August 2017, they announced the release of their second album called "Chain Up The Sun" out on The Native Sounds.
On September 16th, 2019, Kay released her debut single "Im too much", as Bad Daughter on bandcamp. 
Kay is featured on fellow Floridian band A Day To Remember's single "If It Means A Lot To You," from their third album titled "Homesick". Kay has been shown in live videos singing the song with the band.
She currently lives in Brooklyn, New York.
As featured artist
|Title||Year||Peak chart positions||Album|
(Professor Green featuring Sierra Kusterbeck)
|2012||29||95||At Your Inconvenience|
|"If It Means a Lot to You"
(A Day to Remember featuring Sierra Kusterbeck)
(Anarbor featuring Sierra Kusterbeck)
(Brown & Gammon featuring Sierra Kusterbeck)
|"(No) Faith in Fate"
(I the Mighty featuring Sierra Kay)
|"Lines of Your Hands"
(The Devil Wears Prada featuring Sierra Kay)
- "Sierra Kusterbeck".
- "Back Words".
- "Sierra Kusterbeck".
- "Back Words". Archived from the original on 2010-11-29.
- "VersaEmerge singer has a new band (with a member of Trash Talk) and it's good".
- bandcamp https://badaughter.bandcamp.com/track/im-too-much. Missing or empty
- "Archived copy". Archived from the original on 2011-11-27. Retrieved 2011-11-27.CS1 maint: archived copy as title (link)
- "HOME - Payless". Payless. Retrieved 22 April 2018.
- Homesick: Special Edition Deluxe (Booklet). A Day to Remember. Victory. 2009. p. 34. VR550.CS1 maint: others (link)