How do I force the Music app to play downloaded tracks in their original, intended order?

I recently downloaded fifteen tracks from the Berlin Philharmonic's website. They are Beethoven's five piano concertos; each concerto is in three movements.

The original files came in three CDs, so in "get info" I labelled each CD as "CD 1 of 3" and so forth.

Within each CD, I carefully ensured that each track was properly labeled "track 1 of 6," and so forth.

Each title came from the licensor with the sequential track number, too. ("09 Beethoven_Piano Concerto No 3.")

No matter what I do, Music refuses to play the tracks in order. In fact, it appears to jump randomly.

I have "shuffle" turned OFF.

I am at my wit's end.

Note: Music plays no music in order. The above describes my effort to fight Music and force it to play something as intended.

The attached screen shot is of a random track, showing the licensor's title with the track and disc number I inserted.