An example of song sampling is in “Don’t threaten me with a good time” by Panic at the disco. It has a guitar rift at the beginning that goes through most of the song which was sampled from B-52s Rock Lobster.

Quotation/interpolation

There is a example in this with “Dream on” by Aerosmith and “Sing for the moment” by Eminem. There is a quote from Dream on  straight into song for the moment.