How can I film song covers?

Or
2

So I have a cheap 30 euro aukey micro, a laptop and a voice. How can I best record something like that and especially which apps can I use to edit the whole thing / get music underneath?

Rh

Take music from YouTube with a YouTube downloader and then record and edit it with e.g. Audacity

Dr

Or buy the karaoke file from http://www.karaoke-version.de.