Like songs or style or genrally?
I answered something like this a few days ago. Also, musicians did not always have low social status.
I'm guessing you mean in medieval times, due to the use of the word "bard"? Can you give a more specific era if not and I can answer in depth? This question is very vague.
Regardless, musical ability and social status had little to do with one another. Kings and Queens were accomplished performers and songwriters/composers, as were the sons and daughters of dirt farmers.
hi! since you're interested in Ancient Greece and Rome, you may get something out of these previous posts
How did the Greeks notate music and do any of these compositions survive today?
What was music like in the Roman Republic/Empire? Was there anything close to an orchestra in scale?
What type of music was common in ancient Roman and Greek societies?
Did urban Romans and Greeks have a concept of folk music, dress, and so on?