"Don't Know Why" is by the American singer-songwriter and guitarist Jesse Harris. The song is best known however in the version recorded by Norah Jones on her debut album Come Away With Me.
As a tribute to Norah, who turns 42 today, Shannina sang and played this wonderful cover version. Shannina studies singing with Yurie and guitar with Giovanni, who accompanies her here.
Great job, Shannina!