You get used to the exact amount of space between lines. You write a word and then you write an alternate word over it. You want enough room so you can read it, so the lines can't be too close.
Stephen SondheimA song is such a short form ... that 'the slightest flaw seems like a mountain.' And so every song needs to be revised 'til it's close to perfection... But achieving perfection takes a lot of energy.
Stephen Sondheim