The son of Lamech, (Gen. 4: 21.) He invented instruments of music. His name is from Jobel, he that produceth. See Father.
a son of Lamech, the inventor of musical instruments, Gen 4:21.
Ju´bal (music); one of Cain’s descendants, son of Lamech and Adar. He is described as the inventor of the kinnor, and the ugab, rendered in our version ’the harp and the organ,’ but perhaps more properly ’the lyre and mouth-organ,’ or Pandean pipe (Gen 4:21) [MUSIC].
Music, son of Lamech and Adah, and a descendant of Cain. He invented the lyre, and the shepherd’s pipe, Gen 4:21 .\par
Ju’bal. (music). A son of Lamech by Adah, and the inventor of the "harp and organ." Gen 4:21.
Lamech’s son by Adah; invented the harp and organ (pipe), i.e. stringed and wind instruments (Gen 4:21). Brother of Jabal, the beginner of pastoral life. The connection herein is implied between nomadic life and music, which can be practiced in the leisure afforded by such a life. Pan and Apollo, to whom the Greeks attributed the invention of the pipe and lyre respectively, were represented as shepherds.
[Ju’bal]
Son of Lamech and Adah: "he was the father of all such as handle the harp and organ." Gen 4:21.
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By: Emil G. Hirsch, J. F. McLaughlin
Son of Lamech; "the father of all such as handle the harp and pipe" (Gen. iv. 19-21, R. V.); that is, he was the "father" or the first of the class of musicians, the founder of music, the inventor of the "kinnor" or lyre and ofthe "'ugab" or reed-pipe. It is noteworthy that though the three names "Jabal," "Jubal," and "Tubal" may be derived from the same root (
= "to lead" or "bring forth," "to be fruitful"), the name "Jubal" suggests likewise 
("the ram's horn"), and hence "music."