ɪn tˈuː θˈaʊzənd twˈɛlv, hˈaɪm bɪɡˈæn pˈʌblɪʃɪŋ ɐ sˈɪɹiz ʌv mjˈuːzɪkɹᵻlˈeɪɾᵻd nˌɑːnfˈɪkʃən kəlˈɛkʃənz kˈɔːld "ðə fˈɜːst tˈaɪm aɪ hˈɜːd" sˈɪɹiz, fɔːɹ wˌɪtʃ hiː sˈɜːvz æz ˈɛdɪɾɚ.
In 2012, Heim began publishing a series of music-related nonfiction collections called "The First Time I Heard" series, for which he serves as editor.