4 Sung hymn is an app developed by Korea Digital Media students and teachers together.
The proceeds from the sale are used for school development and scholarships.

4 Father hymns is an application for saints and church choir practice, worship and meditation to prepare for worship.
The Four-Hole Hymnal contains all the music support for the new Hymn 645, and includes all four-member MIDI performances of soprano, alto, tenor, and bass.

* Key features of the application

1. Image of sheet music of hymn 645
2. Search and bookmark function of hymns by title
3. Support for playing MIDI performances of all four hymns (soprano, alto, tenor, bass)
4. Selective playback function by gender for practicing choir
5. Four musical instrument selections for worship accompaniment and personal meditation
6. Song repeat function for meditation
7. Pole play function