[7] Andrew Joslyn began his professional career in music when he toured and wrote with the Pacific Northwest folk rock band Handful of Luvin’ from 2002 to 2010.
[16][17] Joslyn worked with some other known musicians, including: Macklemore & Ryan Lewis,[8] David Bazan[18] (Pedro the Lion),[19][20][21] Allen Stone,[22][23] Ivan & Alyosha,[24] Mark Lanegan,[25] Grieves and Budo (Rhymesayers).
[26] Joslyn composed and arranged extensively for the Seattle Rock Orchestra,[27][28] He leads the Passenger String Quartet,[29][30][31] which has backed artists including Duff McKagan,[32][33] Suzanne Vega,[34] Daniel Bernard Roumain,[35] folk legend Judy Collins,[36][37] and DJ Spooky.
[38] In early 2013, Joslyn was hired to arrange strings and brass for American alternative rock icon Mark Lanegan for Imitations (album).
[39][40] Joslyn has performed live on TV with Mary Lambert on The Tonight Show with Jay Leno on January 10, 2014,[41] Macklemore & Ryan Lewis at the 56th Grammy Awards on January 26, 2014,[42] and with Macklemore and Ryan Lewis at the 2015 American Music Awards where they debuted the emotional new song "Kevin", which Joslyn helped co-write[43] In late 2016, he began scoring music for the true crime series Casefile True Crime Podcast.
[44] In October 2016, Joslyn released the lead single of his solo record, "Plastic Heaven," and it was premiered both by Atwood Magazine, and Afropunk publications.
The record is a stunning collection of genre bending, Orchestral Pop music and features Joslyn's songwriting and arrangements along with the vocals of some of the most iconic Northwest musicians and beyond, including Mark Lanegan (Queens of the Stone Age), Shelby Earl, Adra Boo (Fly Moon Royalty), Will Jordan, Billy McCarthy (Augustines), Eric Anderson (Cataldo) and Susy Sun.
After its release "Praying" received universal acclaim from music critics, who praised Kesha's vocals while calling the song powerful and noting it as a departure from her previous efforts.