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Melodic contours might help you[0]--you only need to remember if the tune goes up or down.

SoundHound used to do that, looks like it can still be used through: https://www.midomi.com

Why "used to"? The SoundHound (Android) app is still around...

I just briefly looked at their website and saw the B2B pivot. Wasn't sure if the app is still around, but upon closer inspection it seems like it is.