There are at least 2 artists with the name Opinion:

1) Montreal’s Opinion gives us some much needed Quiet Time with their transcendent ambient works.
https://quiettimetapes.bandcamp.com/album/yt

2) Opinion is a german grunge band from Berlin. They sing in english. They arent famous, but in and around Berlin they have many fans and a few albums released. They were influenced by Nirvana, Smashing Pumpkins, Pearl Jam, Hole Melvins, Silverchair.Opinion formed up six years ago. Discography: 1.opinion 2. eleven 3.remember 4 world of today .Homepage:
http://www.opinion-music.com/
OPINION are:
Aladin Kajtazovic
Philipp Bauer
Michael Kögler
Andreas Loh
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Artist biography from last.fm