Just finished this upright bass project. The concept was that I wanted something portable that I could take out of town and get some practice in without needing to amplify. The small acoustic chamber gives just enough sound for that. Also, I wanted to duplicate the shape of the neck and fingerboard of my Upton Bass, so that practice would be apples to apples. Took me three sets of strings (breaking many) before I could finally get all four strings in tune. Seems promising and I may yet add amplification.