If Youtube videos do not play reload the page, that's a Youtube bug.
Or maybe now, a few years later, it's a new bug ;-)

edo. - Trouble Comportemental (Dub Mentor Version)

HOLTOUG - Noisy Nights feat. Soho Rezanejad

Karel Gott - Oči barvy holubí (Sealed With A Kiss)

Karel Gott & Marta Kubisova - Jarmark ve Scarborough (Scarborough Fair)

Woodkid - I Love You