import re
sts = ['Skank Up [feat. Ding Dong] (Oh Lawd)','Skank Up (Oh Lawd) [feat. Ding Dong]', 'Skank Up (Oh Lawd) (feat. Ding Dong)']
for st in sts:
	print(re.sub(r'\s*(?:\[feat[^][]+]|\(feat[^()]+\))', '', st))