He also collaborated with many other artists, such as Jennifer Love Hewitt, Michelle Branch, Andrew Dorff, and Michael Landau.

[1] He also played the guitar on records by Macy Gray, Jennifer Love Hewitt and Camille Bright-Smith.

He also performed on his albums blackAcetate (2005; one song only), Extra Playful (2011), Shifty Adventures in Nookie Wood (2012) and Mercy (2023).

Boyer's debut solo album called Fun for Mentals was released in 2007 and was followed by Hell's Not Her (2009) and Cahuenga Gardens (2016).

[1] His song "Pretend" was featured in a movie called 3 Days to Kill with Kevin Costner in the lead role.