Songs That Mention Themselves in the Lyrics

No, not songs with just the title in the lyrics, and not songs that mention their writers or singers. I'm looking for songs that refer to themselves as songs.

Here are two examples.
1. We'll Meet Again.

They'll be happy to know, that as you saw me go, I was singing this song.
2. Tennessee Waltz
I was dancing with my darling to the Tennessee Waltz

Anyone else able to contribute any others?