|Cat no.||90 544 654 4|
Slapen (Sleeping) features 18 bedtime songs and stories from previous album releases. The album comes with a hardcover booklet, with all the song lyrics and photos of the cast.
- Als Ernie Niet Kan Slapen (When Ernie Can't Sleep) - Bert and Ernie
- Als Het Donker Is (When It is Dark) - Dick Poons and choir (Hoots)
- Bang in het Donker (Afraid of the Dark) - Bert and Ernie (story)
- De enge droom (The Scary Dream) - Ieniemienie
- Dromenland (Dreamland) - Sien
- Wakker worden (Wake Up) - Ieniemienie
- Dromenliedje/Dromen zijn bedrog (Dream Song/Dreams Are Not Real) - Tommie and others
- Een droom (A Dream) - Tommie (Pino is erroneously credited)
- Ik Dans Mezelf In Slaap (Dance Myself to Sleep - Bert and Ernie
- In bed geplast (I Wet the Bed) - Tommie
- Lekker slapen (Take a Nice Nap) - Bert and Ernie
- Onder M'n Bed (Under My Bed) - Tommie
- Pino's Verhaaltje Voor Het Slapen Gaan (Pino's Bed Time Story) - Pino
- Slaapliedje (Lullaby) - Sien
- Slaapliedje van Tommie (Tommie's Lullaby) - Tommie
- Tandenpoetsen, wassen, plassen (Brushing Your Teeth, Washing, Potty Time) - Ieniemienie, Tommie and Sien
- Verhaaltje Voor Het Slapen Gaan (Bedtime Story) - Sien
- Wakker worden (Wake Up) - Bert and Ernie
- Another booklet-and-CD, Monsters en Andere Enge Dingen (Monsters And Other Scary Things) was produced by Rubinstein around the same time. It was followed by a third booklet-and-CD, Dierendingen (Animal Stuff).
- The tracks were previously released on Sesamstraat Hitparade (tracks 1 and 6), Zing Mee met Sesamstraat (track 2), Ernie Heeft Rommel Gemaakt (track 3), 'n Logeerpartijtje (tracks 4, 5, 10, 14, 16, and 17), Hou Je Vast!! (tracks 7 and 8), Neuzenlied (track 9), Hiep Hiep Hoera (tracks 11 and 18), 20 Jaar Sesamstraat (track 12), Grover Gaat Naar School (track 13), and Plezier Voor Vier (track 16). Some of the tracks have never been released on CD before.
- Recent Sesamstraat fans might not recognize the voice(s) of Pino, since Renée Menschaar, who's currently playing the character, is not featured on the album.
- The booklet contains a few spelling errors and lyrical mistakes.
- The booklet was released with two different covers: one with a photo of Ieniemienie in bed, and one with a photo of Ernie reading in bed.
- Sien Diels as Sien
- Leo Dijkgraaf as Pino (track 13)
- Paul Haenen as Bert and Grover
- Hellen Huisman as the narrator (tracks 3 and 14)
- Erik J. Meijer as Pino (track 7)
- Bert Plagman as Tommie
- Dick Poons as Hoots
- Wim T. Schippers as Ernie
- Catherine van Woerden as Ieniemienie