Verified Answer :

Many of them sang about Chivalry and love though there those
who sang of their lands and countries.  They
later became part of the elite in society as many nobles became patrons of
these groups.  Some troubadours were
knights who took part in the Crusades.
They help usher in beautiful objects, elegant behaviors, music and
poems.

Troubadour create songs and stories that commonly played among the citizen during the middle ages. During that era, Troubadour often go to the war zone to tell the stories of the war into songs or poet, they also tell the story about kings and the noblemen who managed to invited them to the people