Star Festival from Super Mario Galaxy but lower pitch to sound like a distant memory.

Star Festival - Low Pitch (SMG)

All 3 versions of the Wii U Mii Maker, pitched down for added nostalgia.

Wii U Mii Maker - Full Mix

I tried to remake my own version of Snowy from the Undertale OST but it didn't go very well.

Mice On Venus by C418 from the Minecraft Alpha OST, pitched down to perfection.

Just for nostalgia I pitch down ost songs that mean alot to me to make them seem like a distant memory.