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Behold the awsome sound of the good old 56K6 dial-up modem!

Before broadband you had to use one of these to go online. It dials a number (of your internet provider) , makes some noises and voila, you could surf the world wide web! :P
The downside was, that it was kinda slow and expensive (high telephone bills) and before ISDN your line was occupied while surfing so no one could call you (and vice versa, you couldn't call anyone while surfing the web).

Little Q&A so you don't have to ask:

Q: When PC parts make those noises their broken!1one!
A: No, this is perfectly normal for dial-up modems, it's functioning perfectly.

Q: I used to have one of those, but....it sounded different!
A: That is possible, the sound (volume mainly) may differ between different modems. Part of the sound also depents on which number it dials (well, that's the biggest part).

Q: Aargh! My ears! my ears! My ears bleed!
A: I've boosted the volume a bit, because the noise was a bit hard to hear. But if…