Which songs it works best on
Best results: pop, K-pop, and Western pop released in the last five years, where the mix has an accurate center image.
Reasonable results: 2000s ballads and rock.
Low removal: mono mixes (live recordings, older masters) and experimental mixes where the vocal is already panned left or right.
Try it on any song first; if the result is not satisfying, switch the preset to "Center Cancel Aggressive" or lift the low end slightly with the EQ to improve it.