we remember lindsay lou, heart and sparkling eyes, music and guilelessness, a welcome dream of a smile that beams forever. we remember martin richard, tough and competitive. kind and caring, a dorechester kid through and through. and we will remember sean collier, dedicated with honor, trusted and respected, badge 310. we will remember. ♪ ♪ i went up to the mountain ♪ because you asked me to ♪ up over the clouds >> you are listening to our live coverage right now of the memorial service that is taking place in boston on this, the anniversary of the boston marathon bombings, this being the boston children's chorus. we're going to take a break. there is much more to get you caught up on, including some developing events in ukraine. i'm del walters in new york. we'll be right back. ♪ ad it now >>> i'm del walters in new york, this is al jazeera america. we are in boston at this hour watching a moving memorial ceremony taking place, a tribute to those who died one year ago in the boston marathon bombing. this is the boston children's chorus, singing "up to the mountains" ♪ you loved me so