Andrew Geimer is a former concert/marching band geek. First-chair Trumpet, he was. Upon getting braces on his teeth (not the Invisline type), Andrew was forced to set down his boss piece of brass.
Yearning for a musical outlet, (and to develop a skill that girls actually like), Andrew picked up his brother's guitar and has been killing it ever since.
Maybe not "killing it."
"Giving it his best shot", maybe.