Sound right (4,4)
I believe the answer is:
ring true
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sound right</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ring true that I've seen before include "make it sound right" , "Convince of veracity like accurate bell?" , "Sound convincing, like clear bell" , "sound the real thing" , "Feel authentic" .)