In Brian Dewan’s song about a cursed chain letter, a banker who disregards the letter’s warnings falls from a seventh-floor window, gets tangled in trolley wires and spits sparks. It is just one in a catalogue of macabre and comic ends met in the song. Released in 1993 on Tells the Story, Dewan’s first full-length album, “The Letter” is a solid decade ahead of its time in its behind-the-times, stylized parlor horror. Who knew then what a profound influence the illustrator Edward Gorey would become on 21st-century indie folk?