THE MANSION-Music Room (expensive)
http://www.daz3d.com/i.x/shop/itemdetails/05ri3aohjh2hs2p7mn78hrdjc2/?item=441
Kimmarcus' UPDATED Violin Kit
http://www.3dcommune.com/3d/store/more_info.mv?+P1003652435
Guitar Set
http://www.daz3d.com/i.x/shop/itemdetails/-/?item=4679
cp-vanishing point urls I have are from before CP site redesign so not posting
Bass Fiddle (for Poser)
Merlin's Celtic Harp
Morphing Trumpet (daz free forum I believe)
Professional Flute
http://market.renderosity.com/mod/bcs/index.php?ViewProduct=8787
Baroque Trio
http://www.daz3d.com/i/3d-models/new-published-items/baroque-trio?item=8217&
PhilC-Musical Instruments Bundle
Sixus RockStar: Piano (search either CP or their site)
MIDI Piano Bundle stand up piano
http://market.renderosity.com/mod/bcs/index.php?ViewProduct=51666
Music Pack
http://www.daz3d.com/i/3d-models/-/music-pack?item=285&
Ready piano bundle
http://market.renderosity.com/mod/bcs/index.php?ViewProduct=73640

Hope that helps. Did not search the free items here, but I would give that a try also.

Gary

"Those who lose themselves in a passion lose less than those who lose their passion"