| CS20-1 | Vocalise: cello & voice |
| CS20-2 | Duets for Cello & Viola: Four Sharps Family: Major |
| CS20-3 | Duets for Cello & Viola: Four Sharps Family: Major to Minor |
| CS20-4 | Duets for Cello & Viola: Five Sharps Family: Minor |
| CS20-5 | Duets for Cello & Viola: Five Sharps Family: Minor to Major |
| CS20-6 | Duets for Cello & Viola: Five Sharps Family: Major |
| CS20-7 | Duets for Cello & Viola: Five Sharps Family: Major to Minor |
| CS20-8 | Music for Ballet Class: Barre |
| CS20-9 | Music for Ballet Class: Barre |
| CS20-10 | Music for Ballet Class: Barre |
| CS20-11 | Music for Ballet Class: Barre |
| CS20-12 | Music for Strings |
| CS20-13 | Duets for Cello & Viola: Six Sharps Family: Minor |
| CS20-14 | Duets for Cello & Viola: Six Sharps Family: Minor to Major |
| CS20-15 | Duets for Cello & Viola: Six Sharps Family: Major (1) |
| CS20-16 | Duets for Cello & Viola: Six Sharps Family: Major (2) |
| CS20-17 | Duets for Cello & Viola: Six Sharps Family: Major to Minor |
| CS20-18 | Duets for Cello & Viola: Six Flats Family: Minor |
| CS20-19 | Duets for Cello & Viola: Six Flats Family: Minor to Major |
| CS20-20 | Duets for Cello & Viola: Six Flats Family: Major |
| CS20-21 | Duets for Cello & Viola: Six Flats Family: Major to Minor |
| CS20-22 | Duets for Cello & Viola: Five Flats Family: Minor |
| CS20-23 | Duets for Cello & Viola: Five Flats Family: Minor to Major |
| CS20-24 | [TP20-1] I have a little golden bell |
| CS20-25 | Duets for Cello & Viola: Five Flats Family: Major |
| CS20-26 | Duets for Cello & Viola: Five Flats Family: Major to Minor |
| CS20-27 | Duets for Cello & Viola: Four Flats Family: Minor |
| CS20-28 | Duets for Cello & Viola: Four Flats Family: Minor to Major |
| CS20-29 | Duets for Cello & Viola: Four Flats Family: Major |
| CS20-30 | Duets for Cello & Viola: Four Flats Family: Major to Minor |
| CS20-31 | Duets for Cello & Viola: Three Flats Family: Minor |
| CS20-32 | Duets for Cello & Viola: Three Flats Family: Minor to Major |
| CS20-33 | Duets for Cello & Viola: Three Flats Family: Major |
| CS20-34 | Duets for Cello & Viola: Three Flats Family: Major to Minor |
| CS20-35 | Duets for Cello & Viola: Two Flats Family: Minor |
| CS20-36 | Duets for Cello & Viola: Two Flats Family: Minor to Major |
| CS20-37 | Duets for Cello & Viola: Two Flats Family: Major |
| CS20-38 | Duets for Cello & Viola: Two Flats Family: Major to Minor |
| CS20-39 | Duets for Cello & Viola: One Flat Family: Minor |
| CS20-40 | Duets for Cello & Viola: One Flat Family: Minor to Major |
| CS20-41 | Duets for Cello & Viola: One Flat Family: Major |
| CS20-42 | Duets for Cello & Viola: One Flat Family: Major to Minor |
| CS20-43 | [TP20-2] I saw a rainbow |
| CS20-44 | [TP20-3] We have a clock |
| CS20-45 | Piano: left behind |