When the folks at MusicMaster asked me what my favorite feature of MusicMaster is, I answered with, 'I have to pick just one?' I build a lot of databases. So the simple ability to cut and paste in and out of MusicMaster makes it fast to build a database from scratch, or to add songs or research scores. Then the keyword wizards help to quickly get the perfect separation between artists and titles. The marking, mass changing and library analysis tools are quick and exactly what I need to make sound mathematical choices.