Carol Christmas app for iPhone and iPad

1. Scored music with lyrics, can play, not dumb PDF.
2. Playing cursor like TV karaoke plus pitch, speed, instrument adjustment.
3. Hymn book new experience: search melody, title, text, author, composer; turn page, zoom size quick finger operation.
4. Subset of our "classical hymns".
5. 573 Songs: 24 Christmas Carols, 15 National Anthems, Others are Christian Hymns.

Title of Christmas Carols with hymn number in this book:
074 Hark! The Herald Angels Sing
175 It Came upon the Midnight Clear
220 O Come, All Ye Faithful
319 Angels, from the Realms of Glory
320 Angels We Have Heard on High
465 Go Tell It on the Mountain
556 O Holy Night!
557 Good Christian Men, Rejoice
558 I Heard The Bells on Christmas Day
559 Oh, Come Little Children
560 What Child Is This
561 How Great Our Joy
562 While Shepherds Watched Their Flocks
563 Away in a Manger
564 Away in a Manger
565 Silent Night, Holy Night
566 Break forth, O Beauteous Heavenly Light
567 Gentle Mary Laid Her Child
568 We three Kings of Orient Are
569 O Sing a Song of Bethlehem
570 The Birthday of a King
571 O Little Town of Bethlehem
572 Theres a Song in the Air
573 The First Noel