You can certainly use an electric-acoustic guitar with GarageBand and similar programs. A semi-acoustic guitar (also known as a hollow-body electric) is an electric guitar in which some part of the body is hollow.It is semi acoustic because the hollow section is not large enough to give the instrument satisfactory volume or tone without amplification.here is some confusion here between semi-acoustic guitars and electric acoustic guitars. It's compounded by the fact that the guitar linked in the question has been mislabelled by the shopping site-they are evidently not specialists in music.