Cakewalk is one of the most powerful programs on the market today for recording and composition.  ePiano systems from 2002-2006 typically contain one of the Home Studio versions.  From 2007, the core bundle features "music creator".

Cakewalk has a great tutorial section that will answer many of the budding composers questions. From Cakewalk’s top menu bar click the <Help>, <Help Topics> and locate the <Getting Started>:

or visit the Cakewalk Home Studio support site at:
http://www.cakewalk.com/Support/HomeStudio

Situation: I want to print music of what I play:

1. Open Home Studio on the CREATE menu tab
2. From the Cakewalk Quick Start Menu, choose <Create a New Project> using and select the <EPIANO> from the list of included templates. You should see a grand staff (bass and treble clef)
3. Click Record button (red circle) in upper right hand corner.
4. After 4 beats, start playing -
5. Click STOP (black square when finished). Replay if desired to check your recording.
6. Under the File menu choose <Print> to send your music to the printer (if attached)

Note: If you want to adjust the tempo to get a more accurate printout, click on the Metronome icon (see image below)

Home Studio’s
Metronome button—Allows you to TAP your own tempo in too!