H. E. Frischknecht: 4 Pieces for a Meantone Organ
H. E. Frischknecht: 6 Pieces for a 24-Tone Organ
H. E. Frischknecht: 3 Pictures for Protoyp 2 of ORGAN-INNOV-UM "Nov-Org"
H. E. Frischknecht: 6 Pictures for Protoyp 3 of ORGAN-INNOV-UM "Nov-Org"
H. E. Frischknecht: 4 Pictures for the Organ in Biel Parish Church "Nov-Org"