Hypognosis:
I love Eurovision but it's most definitely NOT the place to broaden your musical tastes. Most countries seem to be looking for something 'safe and familiar' with their choice of a song for the competition, rather than offering anything new (or even which is representative of their traditional music).
For example, I watched this year's first semi-final on BBC iPlayer a few hours ago. (I've yet to watch Thursday evening's second semi). While it was worth watching as an 'entertainment spectacle' (with the lighting and special effects teams definitely worthy of awards), most countries 'played safe' with generally unoriginal pop/rock entries. Only the Netherlands stood out as 'different' (for their choice of a country number, which made it to the finals, and even that wasn't very 'original'), perhaps also along with San Marino (for a brave attempt to emulate the voice of Telly Savalas in a rather catchy pop number, which failed to be selected - see video).
If you really want your musical tastes broadened then, as a lover of 'world music', I'll be happy to introduce you to some outstanding music from Africa, South America, Pakistan, etc (and even some superb sounds from Europe that would stand no chance whatsoever of being selected for the Eurovision Song Contest!)
Anyway, here's the sort of thing that you're missing through not watching Eurovision: