Sing

"Then sang Moses and the children of Israel this song unto the L-RD..."Exodus 15:1
"Then Israel sang this song,..." Numbers 21:17
"Then sang Deborah and Barak..."...even I, will sing unto the L-rd, I will sing praise to the L-RD G-D of Israel..."
"Sing unto the L-RD, all the earth;shew forth from day to day his salvation," IChronicles 16:23
"Then shall the trees of the wood sing out at the presence of the L-RD, because he cometh to judge the earth."
Singing is a way to praise the L-RD.

When G-d sings

I love  this verse about G-d joying over Israel with song during the kingdom.  It comes from Zephaniah 3:17
"The L-RD thy G-d in the midst of thee is mighty; he will save, he will rejoice over thee with joy; he will rest in his love, he will joy over thee with singing."
Because of my trust in the Lamb of G-d which taketh away the sin of the world I will sit down with Abraham, Isaac, and Jacob in the kingdom.  I will hear G-d sing.  Will you be there also to hear G-d sing?