Sampling is a technique that was born under hip hop that uses a clip from a preexisting song. The clip is isolated and then looped underneath a rapper. People are often debating the use of samples and the copyright laws behind it. It can be considered plagiarism if proper credits and previous negotiations are not settled. I have heard some songs where I can recognize a sample because I hear it in many songs. A popular song that used samples is M.C. Hammer – U Can’t Touch This. The sample is taken from Rick James – Super Freak. The sample played the whole time in the song.