straight, only on "gma." we're right there for the most important moment of robin's journey. >> now's a good time to say, go, sally, go. >> getting the crucial stem cells of life from her sister. surrounded by family and friends. the morning begins with a prayer and ends in a joyful song. ♪ ain't no mountain high enough ♪ ♪ nothing can keep me keep me from you ♪ ♪ ain't no mountain high enough ♪ ♪ nothing can keep me keep me from you ♪ let's kick off this friday morning with a little spirit. how about that, robin roberts? showing how much strength she has. that wa...