"Resonant Blue" is the thirty-sixth single of J-pop idol group Morning Musume. It was released under the Zetima label on April 16, 2008.
There are three editions. Limited edition A comes along with a bonus DVD, while limited edition B comes with another DVD and finally a regular edition.
With the original, Another ver., a Studio Dance Shot version, a Night Scene version, and a One-cut Dance version, it makes the most PVs ever released for one single.