The last files really were almost the original — the extra bass was parked under 190 Hz, so phones and laptops could not hear it.
These keep the Tetris lead (everything above ~400 Hz, notes unchanged) and replace the low end with a wobble that sweeps up into the range small speakers actually play. Half-time drums on top.
Original: SoundCloud
1. Lead + audible wobble
2. Same, a bit more bass/drums
