a low-key labor of love that strikes a very resonant chord 
(ROOT (NP (NP (NP (DT a) (ADJP (JJ low) (HYPH -) (JJ key)) (NN labor)) (PP (IN of) (NP (NN love)))) (SBAR (WHNP (WDT that)) (S (VP (VBZ strikes) (NP (DT a) (ADJP (RB very) (JJ resonant)) (NN chord)))))))
(ROOT (NP (NP (NP (DT ) (ADJP (JJ ) (HYPH ) (JJ )) (NN )) (PP (IN ) (NP (NN )))) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (NP (DT ) (ADJP (RB ) (JJ )) (NN )))))))