ear-tickler
/ˈɪətɪk(ə)lə/ /ˈɪətɪklə/noun
A person who pleases or gratifies others with flattering, agreeable, or pleasant words or music. Also: something, especially a piece of music, which is lively and pleasant to listen to.
Origin
Mid 18th century; earliest use found in The Gentleman's Magazine. From ear + tickler, after to tickle a person's ear(s).