<s>
Bank	B-Application
Street	I-Application
Music	I-Application
Writer	I-Application
is	O
an	O
application	O
for	O
composing	O
and	O
playing	O
music	O
for	O
the	O
Atari	B-Device
8-bit	I-Device
family	I-Device
,	O
Apple	B-Device
II	I-Device
,	O
Commodore	O
64	O
and	O
IBM	B-Device
PC	I-Device
.	O
</s>
<s>
The	O
Commodore	O
64	O
version	O
also	O
uses	O
that	O
system	O
's	O
sound	O
hardware	O
,	O
while	O
the	O
Apple	O
and	O
IBM	B-Device
PC	I-Device
versions	O
require	O
a	O
sound	B-Device
card	I-Device
which	O
was	O
included	O
in	O
the	O
retail	O
box	O
(	O
a	O
clone	O
of	O
the	O
Mockingboard	O
)	O
,	O
or	O
alternately	O
use	O
the	O
three-voice	O
sound	O
chip	O
standard	O
with	O
all	O
Tandy	O
and	O
IBM	B-Device
PCjr	I-Device
computers	O
.	O
</s>
<s>
Users	O
can	O
input	O
sheet	O
music	O
(	O
up	O
to	O
four	O
voices	O
on	O
the	O
Atari	O
version	O
and	O
six	O
on	O
the	O
PC	O
)	O
with	O
the	O
keyboard	B-Device
and	O
play	O
back	O
the	O
results	O
or	O
print	O
them	O
.	O
</s>
