He has worked on a number of recordings since the mid-1960s, including classic rock, funk, disco, alternative rock, R&B, hip hop, pop punk and dance-pop.
[2] He is known for his work on hip hop albums, including collaborations with Dr. Dre, who gave him the nickname "Big Bass".
[3] He was last employed at Bernie Grundman Mastering, a mastering house founded and run by Bernie Grundman, and is now independent.
[citation needed] Gardner has over 750 credits, including:[4] Gardner's style is to compress music to the point of distortion, in order to make it sound louder.
[4] He has been nominated eight times for the Grammy Award for Album of the Year award, winning it once for the Outkast album Speakerboxxx/The Love Below.