Mezzo-soprano Kelley O’Connor sings Peter Lieberson’s Neruda Songs with the Seattle Symphony this week. Lieberson’s song cycle — drawn from five poems by Pablo Neruda — were originally written for his wife Lorraine Hunt Lieberson. Each of the five songs meditates on love. Hunt-Lieberson only sang the songs a few times in public before cancer took her life. O’Connor has taken up the challenge of Neruda Songs, singing them with thirteen different orchestras and even receiving Peter Lieberson’s approval.