I have another mystery track from Polish TV to be identifed (aside from the ones listed by adamz689):
TVP2's ident (1992-1997) - both day and night variations
I would have presumed it was composed specially for TVP... , had it not been for a variation of this track (with more instruments) to appear in a Hungarian Disney Princess Zizzlingers ad from 2006 (the ad appears at 2:08 and at 19:16 in the video below):
I believe this mysterious track must have been released on a CD, because (unless I'm not mistaken) the stock music distributors at the time still haven't started re-releasing the digital versions of the vinyl albums. In fact, by the time I wrote the post I have searched pre-1992 CDs from Sonoton, Arcadia Music (inc. Cosmos), KPM Music, Selected Sound, Bruton Music, Primrose Music, Standard Music, JW Media Music, Coloursound, Hibou, De Wolfe Music, Carlin Production Music, Match Music, Killer Tracks, Parry Music and even Manhattan Production Music and I still haven't found that track.