DAYPlayer

DAYPlayer is a music player.

It removes any unnecessary features so that anyone can play one's favorite music very easily.
It is simple, convenient, and easy to use.

You can upload your song files in your computer onto the phone through WiFi.
This is a very convenient feature because you can upload files without connecting your phone and the computer by USB cable.

Of course, it is also possible to upload files by USB cable.
(Run iTunes -> Select my device -> Select 'App' -> 'File Sharing' : Select 'DAYPlayer' and drag & drop the song files into the 'Day Player Documents' section.)