Vertical margins and line control commands

[Frederick Ross a.k.a. Sgath (NATD)]

I am typsetting the first few movements of Bach's Second Partita for
unaccompanied violin, mostly because all the scribbled notes on my music
are no longer even vaguely legible.  I have a couple questions facing
me...

How do I change the vertical margins on the paper to get things shifted
up? I am using a width of 7.5" on the music and would like to extend the
music out to similar placings on the top and bottom of the page.  Wide
margins just make you stop to turn pages more often (:

The other question is, how do I force newlines in text, specifically the
tagline?

Any help would by much appreciated.

Fred Ross, a.k.a. Sgath
http://www.ls.net/~fred/homepage/