<s>
jMusic	B-Language
is	O
an	O
open	B-Application
source	I-Application
music	O
programming	O
library	O
written	O
in	O
the	O
Java	B-Device
programming	I-Device
language	I-Device
.	O
</s>
<s>
Written	O
by	O
Johannes	O
Vazha	O
Tavdgiridze	O
and	O
Andrew	O
Brown	O
,	O
jMusic	B-Language
was	O
released	O
publicly	O
in	O
November	O
1998	O
.	O
</s>
<s>
It	O
is	O
under	O
GNU	B-License
GPL	I-License
license	I-License
.	O
</s>
<s>
It	O
is	O
designed	O
to	O
assist	O
composers	O
and	O
music	O
software	O
developers	O
by	O
providing	O
support	O
for	O
music	O
data	B-General_Concept
structures	I-General_Concept
,	O
modifications	O
,	O
and	O
input/output	O
to	O
various	O
file	O
formats	O
.	O
</s>
<s>
jMusic	B-Language
has	O
a	O
data	B-General_Concept
structure	I-General_Concept
that	O
is	O
based	O
on	O
a	O
musical	O
score	O
metaphor	O
,	O
and	O
consists	O
of	O
a	O
hierarchy	O
of	O
notes	O
,	O
phrases	O
,	O
parts	O
and	O
score	O
.	O
</s>
<s>
jMusic	B-Language
also	O
has	O
a	O
sound	O
synthesis	O
architecture	O
and	O
"	O
instruments	O
"	O
can	O
be	O
created	O
from	O
a	O
chain	O
of	O
"	O
audio	O
objects	O
"	O
(	O
similar	O
to	O
unit	O
generators	O
in	O
other	O
languages	O
)	O
.	O
</s>
<s>
A	O
jMusic	B-Language
score	O
can	O
be	O
rendered	O
with	O
jMusic	B-Language
instruments	O
to	O
an	O
audio	O
file	O
.	O
</s>
