Used not to like but like now: disco, minimalist techno, noise, punk, country & western

Used to like but don't like now: pre-20th century, folk (most of it), confessional singer/songwriter stuff, blues

Used to like, then didn't like, now quite like again: West Coast smooth (Steely Dan, Eagles etc)

Always liked: Beatlesy pop, lush orchestral pop, sugary girlie pop, snotty bratty pop, pop

Never liked: jazz, opera