About Justin

Justin is an audio engineer specializing in mastering music, as well as sweetening audio for short video productions.

He has worked on remastering projects for The Replacements, Rufus Wainwright, En Vogue, Ol’ Dirty Bastard, Shania Twain, Jellyfish, Johnny Cash, The All-American Rejects, Rickie Lee Jones, Donna Summer, Busta Rhymes, Jason Mraz, Lucero, Hanson, New Kids on the Block , Sum 41, Asia, and mastering projects for Michael Franti & Spearhead, North Mississippi Allstars (Grammy Nominated), Tommy Stinson, J.R. Carroll, Lydia Loveless, Bash & Pop, Darren Jessee, The Gaslight Anthem, Malcolm Holcombe, Miles Nielsen, The Men, G. Love (Grammy Nominated), Screeching Weasel, Die Kreuzen, The Mr. T Experience, Paul Collins, The Figgs, and thousands of other independent bands and artists around the world.

Before transitioning to mastering full-time he also spent time at Butch Vig’s Smart Studios in Madison, Wisconsin recording and mixing a number of projects, and has been working full-time in the audio field for over 20 years. His studio Mystery Room Mastering has been in business since 2009.

Growing up and playing in bands in the midwest is what helped Justin formulate a career in audio and ultimately led to playing bass for a time in the band Screeching Weasel, as well as playing bass for Tommy Stinson’s solo shows, and the relaunch of Tommy Stinson’s post-Replacements band called Bash & Pop who released a new album in 2017 on Fat Possum Records and performed on The Late Show with Stephen Colbert.

Justin has also written a number of articles for the popular website The Pro Audio Files on the topic mastering, preparing for mastering, and an overview of what types of master files you may need for various release formats. He also taught audio and mastering part-time at MATC (Milwaukee Area Technical College) from 2017 to 2020, is a member of the Audio Engineering Society (AES), and is a voting member of The Recording Academy (for the Grammy Awards).