
Geezer and me were learning, it was a challenge. Ive let her C Dm C go F Em Dm F Im going through changes Em Dm F Em Im going through changes Dm G F. It sounded really weird I couldn’t believe it was us. Changes Guitar chords and tabs by Black Sabbath. And that was it, we decided to record it. We got the Mellotron in and Geezer started playing that, like an accompaniment, an orchestral thing. “I’d never played the piano before and I started learning it right there and then … I came up with ‘Changes.’ Ozzy came in and said, ‘Oh I like that’ and started singing to it. In his 2011 autobiography Iron Man, Iommi gave his side of the story about how the band composed the song. I thought that was brilliant from moment the we recorded it.” With ‘Changes,’ Tony just sat down at the piano and came up with this beautiful riff, I hummed a melody over the top, and Geezer wrote these heartbreaking lyrics about the breakup Bill was going through with his wife at the time. But there was a lot more to us than that – especially when we started making an effort to get away from all that black magic shit. “When a lot of people hear the name ‘Black Sabbath’ all they think of is the heavy stuff. That’s how we ended up doing songs like ‘Changes,’ which didn’t sound like anything we’d ever done before.” If other people happened to like what we were doing, that was just a bonus. “We wanted to impress ourselves before we impressed anyone else.

In his 2010 autobiography I Am Ozzy, Osbourne explained how a guy who later became known for biting the heads off of flying animals came up with a heartfelt song like this one. Appropriately credited to all four Black Sabbath members – vocalist Ozzy Osbourne, guitarist Tony Iommi, bassist Geezer Butler and drummer Bill Ward – the song dealt with emotional changes, not the hormonal ones that Big Mouth centers around.

It’s likely that most younger viewers, while they may think the melody sounds familiar, don’t realize that this song was originally a slow, piano-based piece about the pain of marital breakup. For several years, the chorus from “Changes,” performed by the late soul artist Charles Bradley, has been the intro music to the Netflix animated comedy Big Mouth, about a group of tweens dealing with puberty.
