- E-bookTin Whistle / Penny Whistle Songbook - 32 Weihnachtslieder / Christmas songsReynhard Boegl
- E-bookTremolo Mundharmonika / Harmonica Songbook - 40 Klassische Themen / Classical Music ThemesReynhard Boegl
- E-bookTremolo Mundharmonika / Harmonica Duo+ Songbook - 51 Kinderlieder Duette / Children Songs DuetsReynhard Boegl
- E-bookMelody Star Duo+ Songbook - 50 Folk & Gospel Songs für 2 MusikerInnen / for 2 musiciansReynhard Boegl