return {
	music_name = "bgm-song01",
	short_music_name = "song01",
	bpm = 120,
	left_track = {
		{
			end_time = "1",
			key_flag = "K_LEFT",
			begin_time = "1"
		},
		{
			end_time = "7",
			key_flag = "K_BOTH",
			begin_time = "2.5"
		}
	},
	right_track = {
		{
			end_time = "1.5",
			key_flag = "K_RIGHT",
			begin_time = "1.5"
		}
	}
}