The song is about E's sister Elizabeth, who committed suicide prior to the recording of Electro-Shock Blues.
ðə sˈɔŋ ɪz ɐbˌaʊt ˈiːz sˈɪstɚɹ ᵻlˈɪzəbəθ, hˌuː kəmˈɪɾᵻd sˈuːɪsˌaɪd pɹˈaɪɚ tə ðə ɹᵻkˈoːɹdɪŋ ʌv ɪlˌɛktɹoʊʃˈɑːk blˈuːz.