I have a 4 string fretless Cort Curbow. I'd always wanted one. I loved the shape, and look. Well, I built a fretless bass. I loved the feel of it. I learned it faster than I had anything else. I never placed any dots or lines. My neck had a slight curve to it so it made it almost a multiscale. There was no wrong placement on that bass. Unfortunately it was stolen. Then I found the whole reason I built my fretless. A fretless Cort Curbow for sale at a reasonable price. I've tried everything to love this bass, and play it as smoothly as my hand-built one. It must hate me. My biggest problem is that it plays and sounds fretted. You have to hit the exact note, where the fret would be or it sounds like u missed your note. I swear if I shut my eyes, I can't tell that it's fretless. Another delimma is its hard to sit and play, and head and neck are heavy. Maybe I spoiled myself by building what I thought a curbow should be. Needless to say it disappointed me.