The Hagstrom Concord is a really fun bass to play, with some great woody tones - I gig this bass regularly. With a shorter scale of 31" it allows for some nice fast playing. But being hollow, it will feedback on occasions, though never too much of a problem. In songs that actually need feedback you can control it; and get the amount you want.
Definitely one of the better vintage semi-acoustic bass guitars. Try a Hagstrom Concord if you can! Here are some soundclips of this bass through a few of my favourite vintage bass amps:
Most clips have the followiong amp setting: volume 5, treble 5, bass 5. Bassmaster "deep" switch is engaged. Exceptions are noted.
Recorded with a Shure SM57 microphone, into an M-audio mobile pre USB interface.