Is there a way to right align only a single line of text in a text frame?

I am composing a suite for solo piano that I am calling The Year. Each movement in that suite corresponds to a month in the year, with the first movement, predictably, being the January movement. I am writing a poem for each of the months in a text frame above the music. And, quite often, with a quote or a poem, I will see the quote or poem itself being either left aligned or centered and the person who wrote the poem or the person being quoted right aligned and italic. I'm wondering, is there a way that I can go from the way it is now(all text left aligned) to having all except for the author line being left aligned and having the author line right aligned? You'll know which one is the author line because it is the only one to have a dash. Here is what I have written in the score so far, poem and all.