Here are three songs which fill my heart with dread on this most dread day. First, the Taize chant, "All you who pass this way, Look and See," captures our reluctance to actually gaze upon the suffering of our Lord, which gaze is the only means to really accept our own sufferings. And the answer to the question - Is there any sorrow like unto His sorrow - would be "No."
The Passion Chorale, "O Sacred Head Surrounded," in which the haunting words "And death with cruel rigor, Bereaving you of life," bring home the horror of what it must have felt like to be standing at the foot of the cross.
Finally, Mozart's Ave Verum Corpus. "Esto nobis praegustatum, in mortis examine."