Chords for ＋α／あるふぁきゅん。 - 星間飛行 (Short ver.)【歌ってみた】Alfakyun. - Interstellar Flight (Macross Frontier OP) [Cover] (). Spark is the smartest and most interesting app to learn and enjoy playing guitar. Spark is an all-around app for beginners and advanced players to learn any song with chords or master new skills with hundreds of lessons and games in Spark.