i need help with some prepositions of time

[MAESTRA SANDRA LUGO]

please can somebody explain to me why this is incorrect:

I AM KEEN AT MUSIC.

I AM KEEN WITH MUSIC.

WHAT'S THE CORRECT PREPOSITIION TO THAT SENTENCE?

ALSO, CAN SOMEBODY TELLS ME WHERE I CAN FIND THE INFO FOR THE PREPOSITIONS,(EJ: WHEN DO YOU USE AN ESPECIFIC PREPOSITION IN A SENTENCE AND WHY?

PLEASE HELP I'M JUST STARTING IN THE EDUCATION FIELD AND I SOMETIMES NEED INFO.

THNAKS M.LUGO:

[RonBee]

Use at. Examples:

I am talented at music.
I am good at that.

Do not post using ALL CAPS.