For a Mashup 2.5, MIK solves the "Camelot Wheel" puzzle. The Camelot Wheel is a system that numbers keys harmonically. Tracks that are adjacent numbers (e.g., 4A to 5A) or same number (4A to 4B) mix perfectly.
Unlike a simple edit, you are throwing away 70% of the original tracks. mashup 2.5 mixed in key
To understand the "2.5," we must first understand the hierarchy of DJ edits. For a Mashup 2