It's the age-old question for music fans and its answer will give you the measure of a person like no other: 'Who's better, The Beatles or The Stones?'

We know which band we'd choose, but now Paul McCartney has come out fighting for his former band.

The music legend was speaking to Howard Stern on his Sirius XM show about the two bands' rivalry and has explained exactly why The Beatles were superior - agreeing with Stern that it was because they had a wider range of influences.

“[The Rolling Stones] are rooted in the blues," he said. "When they are writing stuff, it has to do with the blues. We had a little more influences. … There’s a lot of differences, and I love the Stones, but I’m with you. The Beatles were better.”

Stern then suggested that the Stones' album 'Their Satanic Majesties Request' was an effort to copy 'Sgt. Pepper's Lonely Hearts Club Band', which McCartney once again agreed with.

“We started to notice that whatever we did, the Stones sort of did it shortly thereafter. We went to America and we had huge success. Then the Stones went to America," he said. "We did Sgt. Pepper, the Stones did a psychedelic album. There’s a lot of that. We were great friends, still are kind of. We admire each other. … The Stones are a fantastic group. I go see them every time they’re out. They’re a great, great band."

Hear the full interview below: