UngeheuerLich
Legend
But the D&D Bard is musical. They get Musical instrument Tool proficiencies, they use them as their focus, the description of their spellcasting says they shape magic with their wishes and music. Music in an a core part of the class mechanics and flavour.
Only partially. It is nice flavour, but they can recite or chant ans still cast magic.
Also playing an instrument does not make you a troubador.
And if I could chose, I would remove the instrument proficiencies for the base class and add it to the troubador subclass.