The Isleworth Mona Lisa - I think folks can make up their own minds on that:
http://en.wikipedia.org/wiki/Isleworth_Mona_Lisa I stand by my example above.
Warhol's "images" that he copied were things like Campbell's soup cans, and photo's of Marylin Monroe's face. He would array his subject out, and then paint a mosaic of them, sometimes in different tones or pallets. He didn't take someone else's painting, then copy it verbatim and claim that it was all his original work.
The electronic composers you mention (ah, the good old Moog Synthesizer!) composed their own music (or, as in Wendy's case, used the Moog to play classical - Switched On Bach was a favorite of mine in high school) mostly composed their own work - Wendy being the exception there. But she didn't take a recording of Bach by some orchestra, and use that in her composition!
Obviously I have no input into the rap songs you list above. :eyes: And I'm certainly not going to make any comments about your grandmother.
Hey, I haven't been arguing that rap isn't "music". I do have an issue with unattributed sampling in songs where the sampled portions make up the majority of the 'new' work. Maybe that's not "easy", but it certainly isn't ethical.
I don't understand why people want to blow out their eardrums (and everyone else's withing 100 feet) with crappy low quality (but high volume) bass, while someone rhymes on top of it about abusing women, dealing drugs, showing off their 'bling', and shooting cops and other rappers. It's what some folks enjoy. Fine. I don't get it, and it actually gives me the opposite of enjoyment. I love music. The live music festivals that I go to every year are the things I look forward to most during the year. They make me feel good about myself, and the world around me. They offer hope, and while they often showcase the problems in the world, they also offer up music as a way of forming global communities, a way of at least starting a dialog. I've heard a very small amount of rap and hip hop that I feel fall into this area. Unfortunately, the vast majority the that genre seems to be doing just the opposite. And that's really sad as far as I'm concerned.