Friday Stumper: What ties these three songs together

[gratuitous]

It's not something esoteric like they were all produced by the same guy or recorded at the same studio, but what ties these three songs together:

Silver Heels by Fleetwood Mac
Smoke on the Water by Deep Purple
Sweet Home Alabama by Lynyrd Skynyrd

And no, it's not that the titles all start with the letter "S".

[iwillalwayswonderwhy]

1. All three songs mention other musicians nt

[gratuitous]

5. Apparently not as tough as I might have thought

Well done.

[JarOCats]

2. "And no, it's not that the titles all start with the letter 'S'."

Well, there goes my guess.

[iwillalwayswonderwhy]

3. Paul McCartney, Frank Zappa, and Neil Young nt

[gratuitous]

6. "Silver Heels" also mentions Etta James

But yeah, it was the musicians thing.

[underpants]

4. All three titles start with "S"

What did I win?

[Harker]

7. A new pair of glasses, maybe?