<s>
Rubato	B-Application
Composer	I-Application
is	O
free	O
(	O
GPL	B-License
)	O
software	O
that	O
allows	O
one	O
to	O
compose	O
music	O
or	O
transform	O
existing	O
music	O
with	O
the	O
help	O
of	O
mathematical	O
Category	O
Theory	O
and	O
Topos	O
Theory	O
.	O
</s>
