Ensure both tracks share a similar BPM or use time-stretching to align them.
Start with the instrumental base to establish the rhythm. quevedo_x_spigoli_jr_stit_mashup
If you are looking to create or document this specific mashup, Selection of Source Material Ensure both tracks share a similar BPM or
Carve out space in the low-end of the Quevedo track to allow the Spigoli Jr. bassline to punch through. Structure & Transitions quevedo_x_spigoli_jr_stit_mashup
Transpose one track so they are in the same or compatible musical keys to avoid clashing melodies. The "Stit" Integration