This is a mash-up or other juxtaposition of short portions of non-free copyrighted sound recordings and/or musical works.
Its use in articles about songs that sound alike is intended as a comment on the similarity of the songs in question.
The operators of this web site do not make money from this use.
The uploader claims that this illustration of similarity does not have an unfair effect on the market for copies of the work and that the use thus qualifies under the United States fair use statute (17 USC 107).
To the uploader: Please list the title, artist, and label of each recording in this sample below.