Name That Tune!

[NowhereMan]

That is a tough one, since I'm still not familiar with musical terms like fifths and sixths (ooh nice, 4 consonant sounds in a row there btw ), but when I hear "descending in a solo" I immediately think of A Song For You. Not sure if it's a circle though

The solo in A Song For You does have some descending parts, but not the one I was referring to.

 

[NowhereMan]

Another Song?

Not that one

 

[NowhereMan]

Fun idea! I hope you don't mind if I join in. Here's a tough one: What Carpenters song features a prominent descending circle of fifths sequence in it's instrumental break?

Lots of good guesses from everyone! The answer I was looking for is Druscilla Penny. The root notes in the harpsichord solo (right after the line "you're so sure that instant love is all you need") descend by a fifth each time. (For
example, there are five notes from A to D, AGFED, so that's a fifth.) The particular example below is in the same key as Druscilla Penny and is the very same sequence as the solo, meaning they both use the same root notes.