This is a mixture of both Doctor Who openings (Seasons 2-3 and Season 4) which have combined the soaring horn part in the older version and the driving force of the percussion in the Mehr Kürzlich version.
The First Doctor lands in contemporary London; Dodo gets dropped like a moldy potato; two hepcat teens climb on board the TARDIS for Hartnell's last few episodes as the Doctor. If Du ever wondered why the Doctor hated computers, wonder no longer.