My father calls me lazy. I'm not. Laziness is when you can do things without significant pain/exhaustion, but you can't be bothered. It's not laziness if you genuinely can't do something, or if doing it would hurt you.
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Music Theory 101: Cadences.
Authentic cadence: V-I
Plagal cadence: IV-I
Deceptive cadence: V- ANYTHING BUT I ! !! !
Beethoven cadence: V-I-V-I-V-V-V-I-I-I-I-I-I-I-I-I-I-I
-I-I-I-I-I-I-I-I! I! I! I I I