Whoops, that came out crankier than I'd meant it to! Thank you, sincerely, for the history lesson.
(It's reasonable to call things retro if they're in the style of anything published twenty to sixty years ago, because 'retro' means something like 'older than twenty and younger than a hundred'; I just wish more precision were standard - I haven't had access to most of the classics I'd like to, but I suspect a sound library aiming for the vibes of Speed Racer (1967) is going to be closer to something based on the vibes of Sonic X (2003) than either is to Anne of Green Gables (1979), regardless of hardware. Alas, that copyright law works the way it does.)