Tickle somebody’s fancy
Definition 1 of 1
Pro Tip 1/3Light-hearted Tone
The phrase often suggests a playful or less serious interest, rather than deep fascination. 
A whimsical hat display in the store window tickled her fancy.
Pro Tip 2/3Personal Appeal
Use it to express personal interest or pleasure, indicating something is especially appealing to you. 
Vintage cars really tickle his fancy.
Pro Tip 3/3Subjective Taste
What tickles someone's fancy might not interest others, showing subjectivity in preferences. 
I'm not sure if opera will tickle your fancy, but it's worth a try!