1990 arcade FM synth that rips from the coin drop. Air Buster's soundtrack is fifteen tracks of side-scrolling shooter energy, and "Seaside Front" is so good they gave it an arranged version on top of the original. "Scramble!"
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hits when you break through the stratosphere, and "Out Of Gravity" captures that zero-G transition with synth lines that feel genuinely weightless. The progression from sea-level city to satellite orbit to enemy planet is mapped perfectly in sound.
"Death Circus" on Round 6 goes dark and frantic for the interior push. Two final boss themes back to back means they really wanted that climax to escalate. If you're into early-90s arcade sound chips being pushed to their limits by composers who clearly loved their job, Air Buster's OST is a sharp fifteen-minute ride.