<s>
iMUSE	B-Application
(	O
Interactive	O
Music	O
Streaming	O
Engine	O
)	O
is	O
an	O
interactive	O
music	O
system	O
used	O
in	O
a	O
number	O
of	O
LucasArts	O
video	O
games	O
.	O
</s>
<s>
The	O
idea	O
behind	O
iMUSE	B-Application
is	O
to	O
synchronize	O
music	O
with	O
the	O
visual	O
action	O
in	O
a	O
video	O
game	O
so	O
that	O
the	O
audio	O
continuously	O
matches	O
the	O
on-screen	O
events	O
and	O
transitions	O
from	O
one	O
musical	O
theme	O
to	O
another	O
are	O
done	O
seamlessly	O
.	O
</s>
<s>
iMUSE	B-Application
was	O
developed	O
in	O
the	O
early	O
1990s	O
by	O
composers	O
Michael	O
Land	O
and	O
Peter	O
McConnell	O
while	O
working	O
at	O
LucasArts	O
.	O
</s>
<s>
The	O
iMUSE	B-Application
system	O
was	O
patented	O
by	O
LucasArts	O
in	O
1994	O
,	O
after	O
being	O
added	O
to	O
the	O
fifth	O
version	O
of	O
the	O
SCUMM	B-Application
game	O
engine	O
in	O
1991	O
.	O
</s>
<s>
iMUSE	B-Application
was	O
developed	O
out	O
of	O
Michael	O
Land	O
's	O
frustration	O
for	O
the	O
audio	O
system	O
used	O
by	O
LucasArts	O
while	O
composing	O
The	B-Application
Secret	I-Application
of	I-Application
Monkey	I-Application
Island	I-Application
.	O
</s>
<s>
iMUSE	B-Application
was	O
also	O
found	O
to	O
be	O
useful	O
to	O
account	O
for	O
differences	O
in	O
processing	O
speed	O
between	O
personal	O
computers	O
at	O
the	O
time	O
,	O
as	O
there	O
was	O
no	O
direct	O
means	O
of	O
synchronizing	O
sound	O
with	O
gameplay	O
rendering	O
.	O
</s>
<s>
To	O
account	O
for	O
this	O
,	O
the	O
iMUSE	B-Application
system	O
acts	O
as	O
a	O
pit	O
orchestra	O
,	O
according	O
to	O
McConnell	O
,	O
playing	O
back	O
shorter	O
or	O
longer	O
sections	O
of	O
music	O
while	O
waiting	O
for	O
key	O
events	O
to	O
occur	O
within	O
the	O
game	O
's	O
drawing	O
engine	O
.	O
</s>
<s>
The	O
first	O
game	O
to	O
use	O
the	O
iMUSE	B-Application
system	O
was	O
Monkey	B-Application
Island	I-Application
2	I-Application
:	I-Application
LeChuck	I-Application
's	I-Application
Revenge	I-Application
,	O
and	O
it	O
has	O
been	O
used	O
in	O
all	O
LucasArts	B-Application
adventure	I-Application
games	I-Application
since	O
.	O
</s>
<s>
It	O
has	O
also	O
been	O
used	O
for	O
some	O
non-adventure	O
LucasArts	O
titles	O
such	O
as	O
the	O
DOS	O
versions	O
of	O
Star	B-Application
Wars	I-Application
:	I-Application
TIE	I-Application
Fighter	I-Application
and	O
Dark	B-Application
Forces	I-Application
.	O
</s>
<s>
One	O
often	O
cited	O
example	O
of	O
the	O
iMUSE	B-Application
system	O
is	O
at	O
the	O
very	O
beginning	O
of	O
Monkey	B-Application
Island	I-Application
2	I-Application
where	O
Guybrush	O
finds	O
himself	O
in	O
Woodtick	O
,	O
the	O
small	O
town	O
on	O
Scabb	O
Island	O
.	O
</s>
