Just as video games have become more sophisticated and detailed, so has the music composed for video games, with lush orchestral scores written to fit an individual's gameplay. Correspondent Conor Knighton looks at how the field of video game music has exploded, with symphony concerts of video game music.

Correspondent Conor Knighton talks with guitarist William Apostol, aka Billy Strings, about his inspirations; his upcoming album "Me and Dad"; and how – after years of reflecting on the past – he's now looking ahead in his music.