This Whisky Sour with a splash of orange juice is often also served over ice. It's uncommon to see stone fruit in a Stone Sour in the form of apricot liqueur...
The Stone Sour (made with Tin Cup Bourbon) is a lovely cocktail as the two citrus juices conspire with the apricot brandy to soften the Bourbon in the best way possible - still the Bourbon aroma and taste minus the edge.