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 ;-)

merci, mercy - Why’d You Only Call Me When You’re High

EVA SEVEN - Boy Stop

EVA SEVEN - Monster Hotel

Eva Sršen - Pridi, dala ti bom cvet (Eurovision Song Contest 1970)

LIA X frame - Shiver