Chart datum, level of water depth on a nautical chart. Datum or datum point, a (possibly arbitrary) reference baseline or point from which scientific measurements are made (from a Latin meaning of datum as a given, i.e. an accepted fact)
Music directors and composers must guide musicians and singers by preparing musical arrangements and helping them achieve the best possible sound. Musical talent. To become a music director or composer, one must have musical talent.
These can open up new possibilities for music software that you already use regularly, allowing you to get more out of it. If you're a producer or studio engineer, take a look at the professional-grade sound workshop software like Avid Pro Tools, Steinberg Cubase, Ableton Live and Propellerhead Reason.