Lon­don band Lit­tle Grandad appeared at King’s Cross Sum­mer Sounds free fes­ti­val this year. It’s hard­ly sur­pris­ing that this tal­ent­ed group of musi­cians have risen so quick­ly through the ranks – gor­geous har­monies and heart­felt songs that lean towards Amer­i­cana are their stock in trade. It was only ear­li­er this year that I saw them supporting…