ORF Landesstudio Tirol was re-broadcasting old radio plays for children for some time probably in the 80s or early 90s. My grandmother taped some of these and some of the tapes are in the collection I recently digitized. Most of these radio dramas for children are written by Willi Tom Stassar.
The radio plays had very catchy intro and outro tunes. The following excerpt is the outro of the "Das Zauberschiff" radio play:
The instrument is probably a Harpsichord. The dampeners introduce a quite prominent acoustic fingerprint. Unfortunately, on this specific tape instance, the audio quality is unacceptable. I'll try to find a better version of it on another tape.
If you are interested in additional information, get in touch — @zzoo