how to create a background music selection menu

Thank you for the help. I am new to Unreal and still learning how to use the blueprints.

My project is a simple two level game with LEVEL 1 being a widget-based menu and LEVEL 2 being a 3D game.
I’ve created a “music” options menu in LEVEL 1 that will allow a player to select the music they want to hear while playing through LEVEL 2. While I’ve created each button for the individual song selections (there are just 5), I do not know the best way to transfer the button clicks into variable data that will be played by the in-game audio output.

Can you point me to any tutorials that perhaps I have missed?