Every now and then I hear a new to me song that I have to play over and over again. Right now it is a song on the Cajun Fais Do Do cd by the Breaux brothers called Breaux's Blues. Very haunting
Married Life sounds like the Delmore Brothers' Blues Stay Away from Me.
Lost Her in the Pines also goes by the name In the Pines.
Frankie and Johnny is more for the fiddlers but maybe it's playable on accordion.
Then there's Raise Your Window High (English):http://npmusic.org/Cleoma_Breaux_Raise_Your_Window_High.mp3
and Ouvrez Grand Ma Fenetre (French): http://npmusic.org/Joe_Falcon_Cleoma_Breaux_Falcon_Ouvre_Haute_Ma_Fenetre.mp3
Careless Love (L'Amour Indifferent): http://npmusic.org/Joe_Falcon_Cleoma_Breaux_Falcon_Lamour_Indifferent.mp3