Ambient music pioneer Brian (3)
I believe the answer is:
eno
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ambient music pioneer brian</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for eno that I've seen before include "Musician" , "English National Opera (abbrev.)" .)