Songfacts®:

• Mudhoney has always credited the writing of their tunes as a collaboration between the entire band, and the early classic "In and Out of Grace" is proof of this, as Mark Arm said in his Songfacts interview, "The main riff of that came from Matt [Lukin]. And then either Steve [Turner] or I - I'm not sure who - floated the idea of throwing in a bass and drum break, with a crazy double guitar solo, like something off the first Blue Cheer record [Vincebus Eruptum]."
• One of the first releases on Sub Pop Records, Superfuzz Bigmuff was appropriately named after two kinds of guitar distortion pedals the band favored. This song is a great example of what would soon be known as "grunge," but was more commonly called "garage-punk" at the time.