The answer to FreezeFlame's question is this: Rather than making "original" compositions, I combine music that I download. Example: Daisy Bell and March of the Toys
The result: Both songs are heard simultaneously.
To accomplish this, the least common multiple of the pattern quantities is used. In the case of Daisy Bell and March of the Toys, that is 23 (March of the Toys) × 60 (Daisy Bell). That produces a 1,380-pattern song. That does not surpass 4,000. But, I have both the music tracks for
Chex Quest (structured as a play through, that is, the songs are layed out as they would be heard while playing the game) and a recording of a choir concert from 2,006. That combination has a length of 359 (choir concert) × 701 (Chex Quest play through) (251,659 patterns). This is much higher than even the maximum allowable patterns using 1,024-row patterns (64,000 patterns). Hopefully that helps you understand my adamancy about an increased pattern limit, FreezeFlame.