If the tempo of a style is incorrect during MIDI song playback on the GO:KEYS 5 or GO:KEYS 3, the cause is a style change between different time signatures during MIDI recording.
For example, switching from a style in 4/4 time to a style in 6/8 time during MIDI recording causes the 6/8 style to play back at an incorrect tempo when the recorded song is played back.
To record a song that switches between styles with different time signatures, use audio recording instead of MIDI recording.
Note: The time signature cannot be changed while a style is playing back or while a MIDI song is being recorded or played back.