<s>
Logic	B-Operating_System
Express	I-Operating_System
was	O
a	O
"	O
light	O
"	O
version	O
of	O
Logic	B-Application
Pro	I-Application
,	O
a	O
MIDI	O
sequencer	O
and	O
digital	B-General_Concept
audio	I-General_Concept
workstation	I-General_Concept
software	O
application	O
maintained	O
by	O
Apple	O
that	O
runs	O
on	O
the	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
platform	O
.	O
</s>
<s>
Logic	B-Application
Pro	I-Application
and	O
Express	O
shared	O
most	O
functionality	O
and	O
the	O
same	O
interface	O
.	O
</s>
<s>
Logic	B-Operating_System
Express	I-Operating_System
was	O
limited	O
to	O
two-channel	O
stereo	O
mixdown	O
,	O
while	O
Logic	B-Application
Pro	I-Application
can	O
handle	O
multichannel	O
surround	O
sound	O
;	O
Logic	B-Operating_System
Express	I-Operating_System
also	O
lacked	O
support	O
for	O
TDM/DAE	O
systems	O
,	O
high-end	O
control	O
surfaces	O
and	O
Distributed	O
Audio	O
Processing	O
.	O
</s>
<s>
Both	O
could	O
handle	O
up	O
to	O
255	O
audio	O
tracks	O
,	O
depending	O
on	O
system	O
performance	O
(	O
CPU	B-Device
,	O
hard	B-Device
disk	I-Device
throughput	O
and	O
seek	O
time	O
)	O
.	O
</s>
<s>
Logic	B-Operating_System
Express	I-Operating_System
8	O
came	O
with	O
36	O
software	O
instruments	O
and	O
73	O
effect	O
plug-ins	O
,	O
including	O
almost	O
all	O
of	O
those	O
in	O
the	O
Logic	B-Application
Pro	I-Application
Package	O
.	O
</s>
<s>
Those	O
that	O
it	O
did	O
n't	O
include	O
are	O
Sculpture	O
,	O
a	O
physical	O
modelling	O
synthesiser	O
;	O
the	O
"	O
vintage	O
"	O
instruments	O
(	O
the	O
EVB3	O
tonewheel	O
organ	O
,	O
the	O
EVD6	O
Clavinet	O
and	O
the	O
EVP88	O
Electric	O
Piano	O
)	O
,	O
however	O
a	O
cut-down	O
version	O
of	O
these	O
are	O
included	O
with	O
the	O
GarageBand	B-Application
instruments	O
;	O
Space	O
designer	O
,	O
a	O
convolution	O
reverb	O
effect	O
;	O
and	O
delay	O
designer	O
,	O
an	O
advanced	O
delay	O
effect	O
.	O
</s>
<s>
Logic	B-Operating_System
Express	I-Operating_System
was	O
discontinued	O
in	O
2011	O
,	O
when	O
Logic	B-Application
Pro	I-Application
moved	O
to	O
the	O
Mac	O
App	O
Store	O
for	O
$199.99	O
.	O
</s>
