Recently my hobby became listening to old songs!
I now listen to the (same kind of) music that my parents used to listen to.
I especially love the songs of Akina Nakamori, an old* Japanese idol**!
Her songs are (so) cool! I became a (real) fan of her😍
(Her) music has (already) been loved for generations.
* "an old Japanese idol" sounds a bit rude to my ear. Maybe rephrase it as "a Japanese idol of the 80ies", "a seasoned Japanese idol", "a well known Japanese idol".
** Alternative words for "idol" are for example: "(female) singer", "vocalist (of a band)".