Lyric discussion by chinofish 

Cover art for A Sea Chanty of Sorts lyrics by Margot & the Nuclear So and So's

I think i read that the whole album are stories that interlinked and that got me thinking that maybe being the first track it llinked with the second track skeleton key. I think sea chanty is about a couple, the guy thinking he found the love of his life but always seemed to have a sadness about her because she never told him she was married and is having an affair (plus she is a habitual cheater living "the best she knows how" but more on that later). Later he goes to her funeral to discover she had a family and suspects she was killed by her husband who is a "wolf in sheeps clothing".

Skeleton key i think takes the perspective of the husband who has an unfaithful lover who "left her man and attended to me" probably because she cheated on her current boyfriend at the time with her soon to be husband from sea chanty whom she marries. The husband finds out about the affair she had with the guy in sea chanty and realizes she doesn't really love him and "did a horrible thing to that girl", meaning killed her. Also another thing was the line "she cooked for me" you know kind of like a wifely duty for her husband which i guess is more evidence the couple in this song are probably married.

I could be wrong but it seemed to make sense after listening to the two songs consectutively.