I suppose Two-Mix is possible, but I'd also recommend Psychic Lover.
If it's individual songs; I'm usually carrying around the opening music to several of the Kamen Rider series. With my preference, I find I'm either listening to W-B-X from Takuya; Climax Jump in its numerous versions; Break the Chain from Tourbillon; and Journey Through the Decade by Gackt.
Also I'd recommend if you can find it; Wake You Up also by Hitomi Shimatani.
If it's individual songs; I'm usually carrying around the opening music to several of the Kamen Rider series. With my preference, I find I'm either listening to W-B-X from Takuya; Climax Jump in its numerous versions; Break the Chain from Tourbillon; and Journey Through the Decade by Gackt.
Also I'd recommend if you can find it; Wake You Up also by Hitomi Shimatani.