Mack Wilberg Tree of Life: When spring arises hear our voices singing, for SATB and piano or orchestra.Tree of Life is an expansive setting of an evocative text by David Warner that depicts the sacred archetype of the life-giving tree through the cycle of all four seasons. The lyrics, coupled with simple, memorable melodies, speak of spiritual planting and growth, nourishment, and an abundant harvest; each observation is punctuated by an 'Alleluia' as an expression of praise and gratitude.