Its not like they're selling the music-if this was the case then it is illegal. Views are different from sales-and in the case of one-upon-a-time artists, they may be glad that their song has come back into popularity again.
Attention: NOTHING on this site may be reproduced in any fashion whatsoever without explicit consent (in writing) of the owner of said material, unless otherwise stated on the page where the content originated. Search engines are free to index and cache our content. Users who post their account names or personal information in their questions have no expectation of privacy beyond that point for anything they disclose. Questions are otherwise considered anonymous to the general public.