“Laura Marling sounds nothing like Adele, but the two British singers have something in common: they possess a certain kind of ageless poise that makes your jaw drop when you realize neither of them have yet hit 25. Marling's even a year younger than Adele (she just turned 23 last month), but she's already prepping her fourth album of lyrical, oak-finished, wise-beyond-its-years folk entitled Once ”