This mod replaces all of the current "Radio Freedom" songs, with classical songs composed by famous musicians, such as: Beethoven, Motzart, Vivaldi etc.

Sorry if this mod dosen't meet your expectations, and/or if it doesn't work,  i'm not experienced in "modding"

Installation
Use NMM or:

Extract contents of .zip file into ...\Fallout 4\Data folder so that filepath is ...\Fallout 4\Data\sound\fx\mus\radio\minutemen\<songfile.xwm>.

If you have not already changed your Fallout4.ini for modding purposes:
Go to ...\Documents\My Games\Fallout4\ and open Fallout4.ini with a text editor.
Find the line:

sResourceDataDirsFinal=

and replace with:

sResourceDataDirsFinal=STRINGS\, INTERFACE\, TEXTURES\, SOUND\, MESHES\, MUSIC\, LODSETTINGS\, SCRIPTS\, VIDEO\

To uninstall, just delete the files you added.

Music I added to the station:

Antonio Vivaldi - Four Seasons - Winter
Antonio Vivaldi - Four Seasons - Summer
Antonio Vivaldi - Storm at Sea
Ludwig van Beethoven - Fur Elise
Ludwig van Beethoven - Moonlight Sonata, Movment 1
Frederik Chopin - Prelude in E Minor
Johann Pachelbel - Canon in D
Pyotr Ilyich Tchaikovsky - Valse Sentimentale
Scott Joplin - The Entertainer
Wolfgang Amadeus Motzart - Requiem 
Wolfgang Amadeus Motzart - Piano Concerto No. 21 - Andante 


Enjoy.