I'd say the part of a sample being "a digital representation" is correct, however there's a fun exception to that rule: circuits called bucket-brigade delays th

I'd say the part of a sample being "a digital representation" is correct, however there's a fun exception to that rule: circuits called bucket-brigade delays that perform "analog sampling", using capacitors. They're still used a lot in musical contexts. Those are traditionally regarded as being analog, although in recent times I've seen people claiming they're not, since they use discrete instead of continuous signals. So they're kind of halfway.