We have a friend with twin 14-year-old daughters. We consider them our god-daughters. Several years ago, I bought them a keyboard (electric piano), and then a few years later I bought them each an electric guitar. They have since acquired another keyboard (used but bigger/better) and an acoustic guitar. Typical of girls their age, they have started writing their own songs and have tried to record themselves (separately, not as a duet) on their Droid smart-phones. I know the best option would be to get them a mixer or an audio interface, but their dad doesn't want to go that route. Too complicated, he says. He suggests that I buy them each a USB mic for Christmas. I'm thinking of also getting a MIDI->USB cable and guitar->USB cable (I have one of those). Here's the thing: I went to Guitar Center to ask if that's all they'll need, and the sales-droids couldn't give me a straight answer. They acted like no parent has ever come in to ask "what do I need to buy for my kid so he can record himself playing/singing?" As far as computers, their mom has a Windows-7 laptop she's not using (she carries her iPad everywhere she goes), and their dad runs a Mac computer. The girls do have tablets, but I think those are droid, not Apple or Windows, so I doubt they can be used for recording. I don't know if they only want to record audio, or if they would also want to do video (a good web-cam should take care of that, no?) . So, given the above data, what do I need to buy them? Am I on the right track, or should I go with the (more expensive) option of an audio interface or mixer??