The Feast of Blessed Herman Contractus
is today. There is information on him here.

Here is his most famous composition:

Salve Regina, Mater misericordiae,
Vita dulcedo et spes nostra salve.
Ad te clamamus exsules filii Hevae.
Ad te suspiramus gementes et flentes,
in hac lacrimarum valle.
Eja ergo advocata nostra,
illos tuos misericordes oculos ad nos converte.
Et Jesum benedictum fructum ventris tui
nobis post hoc exsilium ostende.
O clemens, o pia, o dulcis Virgo Maria.

A note: the next time you pray this, either in the original Latin or in English ("Hail, Holy Queen...), remember that if the author were conceived today, it's probable his parents would be pressured to kill him before his birth.