FM synth military rock that screams mid-90s arcade shmup from the first note. Viper Phase 1 by Seibu Kaihatsu runs on that same Raiden-adjacent sound chip energy and it shows. "Go Straight Ahead!!" kicks off with this driving bassline and layered synth leads that keep the adrenaline locked in while you're dodging bullet patterns.
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"Fear of Approaching" is the boss theme and it shifts into something more urgent, almost frantic. "Outer Space" pulls back with a spacier tone that still keeps the tempo up. The whole thing loops perfectly for quarter-munching sessions.
If you grew up feeding credits into vertical shooters at the arcade, this soundtrack is pure nostalgic fuel.