Used MIDI Voyager for iOS?
Developer’s Description
MIDI Voyager plays and visualizes midi files (.mid and .kar):
+ Use any SF2 soundfont for playback (one is already included), may also be compressed with flac, wavpack, opus
+ Add MIDI files to the "Documents" folder via iTunes or choose external files via Document Picker
+ Support for *.zip files: the archive will be extracted during impor...
