Smaller piano (4,5)
I believe the answer is:
baby grand
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">smaller piano</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for baby grand that I've seen before include "Instrument" , "Smaller piano" , "message of proud new parents?" , "Type of piano" , "Small, non-upright piano" .)