Tramp

I’m new to this forum and this show, so forgive me if I’m posting in the wrong place. Just started to watch this show. Not bad, but did anyone else notice the timeline error in the episodes concerning Hally’s Comet? I guessed the timeline was early 1900’s as the Comet appeared in 1910, but in the same episode Jack’s ex sang a song called “You made me love you”. This wasn’t written until 1913!