Thanks to @Bop It Freak we now have the original soundtrack source file of the Trainer Battle theme from FireRed LeafGreen! Now we're one step closer to getting an accurate MIDI of the soundtrack version of Trainer Battle! Also I'm in the process of finding the original sound source of the synths they used so a higher quality soundtrack remaster can happen! Enjoy this original mix of the pitch bending battle music! Now I need to get a World Record in Oddysee so I can play it on my stream! Oh boy!
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https://www.youtube.com/watch?v=13jx5MfPUBQ
I managed to export the amazing tune of Outburst Ambience Unleashed in it's RAW quality yet - it's back in true peacetime from 2008-2016 when Ian and Antony made the series Food Battle and the producers behind the videos took a loop from this track to acompany the video. Enjoy! Expect a MIDI of this coming soon!
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https://www.youtube.com/watch?v=v1fVIqD7zjY
My old school had a Chloride Gent fire alarm system and had grey boxes for the sounders and you can adjust the speed and pitch of the siren. You can hear the siren changing pitch a little bit.
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https://www.youtube.com/watch?v=sUYs6IoVFIE