To get your hands on sheet music isn't' too difficult these days. With Internet as your best friend you can find lots of previously notated music.
However, much of the scores you find are often not exactly what you want or need. Songs are written too high or too low, chord symbols might be missing or are displayed in an unfamiliar style (si-b instead of Bb) or the layout is too dense or too sparse...
Anyway, having the score in computer readable form will enhance your possibilities vastly.
Below you'll find a few examples of sheet music produced with MusiCAD.
A piano piece in the key of B
A 4-part choir piece shown with sopranos/alto and tenor/bass on two lines.
Score of an old Scottish hymn with chord symbol using the MusiCAD Jazz font. The chord symbols will introduce accompaniment voices that allows for easy validation of the used harmonization, let you 'play' with alternative harmony by replacing a few chords. A text block is used for the songs lyrics.
Lead sheet for a traditional song: Oh Suzanna