 On May 16 , 2009 , Archuleta and David Cook performed in the Mall of Asia : Concert Grounds for their Back @-@ to @-@ Back Concert in Manila , Philippines . On June 1 , 2010 , Archuleta released Chords of Strength : A Memoir of Soul , Song , and the Power of Perseverance , a memoir which refers to " the partial vocal paralysis he suffered in 2004 but has now fully recovered from " . He went on a book signing tour beginning in Ridgewood , New Jersey . The book was a bestseller . 
