Advent Comfort by Valerie Floeter  contains sacred piano solos for use in church or home. Advent Comfort contains the following titles –

Arise, O Christian People (AUS MEINES HERZENS GRUNDE)
Comfort, Comfort All My People (FREU DICH SEHR)
God’s Own Son Most Holy (GOTTES SOHN IST KOMMEN)
Hark! A Thrilling Voice Is Sounding (MERTON)
Hark the Glad Sound! The Savior Comes (CHESTERFIELD)
Lift Up Your Heads, You Mighty Gates (MACHT HOCH DIE TUR)
O Bride of Christ, Rejoice (WO SOLL ICH FLIEHEN HIN)
O Lord of Light, Who Made the Stars (CONDITOR ALME SIDERUM)