If you're looking for an example of a band in the middle of making it big, look no further than The Joy Formidable. Formed in North Wales, the now London-based power trio has been riding a monster wave of success this year, touring and playing major U.K. and U.S. festivals – Reading, Coachella, Lollapalooza – and garnering praise from critics and their musical peers alike.  They made such an impression on Dave Grohl of Foo Fighters earlier this year that he took to Twitter to sing their praises: "I would like to personally thank The Joy Formidable for writing the song of the year "Whirring". xxx Dave". The band will open several dates with Foo Fighters in November. The band has a massiv