The Feast of St. Cecilia, Virgin, Martyr, and Patroness of Musicians
is today. There is information on her here. I posted about her last year and the year before that. Dryden wrote a poem about her- the last verse, especially the last line, is probably my favorite bit of poetry.

As from the pow'r of sacred lays
The spheres began to move,
And sung the great Creator's praise
To all the bless'd above;
So when the last and dreadful hour
This crumbling pageant shall devour,
The trumpet shall be heard on high,
The dead shall live, the living die,
And music shall untune the sky.

It is also the feast of the Blessed Martyrs of England, Scotland and Wales and the Blessed Martyrs of Armenia