Hippo was a series about horses in sport, which ran on SVT from 26 September 1998 to 12 December 1998 and consisted 12 episodes. It looksl ike the series might have been for young people.

Episode 2

Benny featured on this episode as a composer.  It looks ike an interview although not know what he said.

Also in the programme:

1. Peter Eriksson (show jumper)
2. Torbjörn Persson
3. Louise Nathorst (dressage)
4. Paula Törnquist (eventing)
5. Isabell Werth
6. Johanna Wisfeldt
7. Ylva Almgren
8. Pernilla Andrée
9. Princess Nathalie zu Sayn Wittgenstein of Denmark (dressage)
10. Benny Andersson
11. Nelson Pessoa
12. Malin Lineus

Archive data from Swedish Media Database:
SVT, SVT1 1998-10-03
Fullständig tablå
19.00 Hippo
Tablåinnehåll Ett ungdomsprogram om hästar med Lotta Jankell. (Även textat i SVT1 4.10) Text-tv sid 199. TVB98-1289
Utgivning
År/datum 1998-10-03
Kanal SVT1
Utgivning Stockholm : SVT, SVT1
Utgivningsland Sverige
Exemplar
VHS TV99-1055
MPEG-2 YA_TV99-1055
1 tum B LP TVB98-1289

Thanks to Jozsef.