MeloTex: Melodic Text Player,

With this app, you can quickly take letter notes of music and later replay them. Interface is designed to allow its user to quickly & easily change Key, Transpose, increase/decrease Octaves. Data can be read/write in a form of .txt file, allowing transferring/sharing at ease.

manual: https://p-library.com/a/melotex/

Edit Tab

A-B: Musical notes as a letter
Up and Down: to increase (/) and decrease () octave
Blue Scroll: Change Key (also used to write letter Sharp (♯:#) with and Flat (♭:b)
Black Scroll: Change Text Size
Space and Enter: Only for ease of reading, doesn’t affect playing

Play Tab
Play Button: Play melodies (Kalimba-inspired interface), 1 Tab = 1 Note
T+ and T-: Transpose
Scrollbar and Menus below: for read/write file to app folder located at “Android/data/pp.flutter.melody/files”

Header Menu
Clear: Make the textbox empty
Unclear: Undo the above action
Play from the beginning: Move cursor to the beginning of the file