<s>
Guitar	B-Language
Pro	I-Language
is	O
a	O
multitrack	O
editor	O
of	O
guitar	O
and	O
bass	O
tablature	O
and	O
musical	O
scores	O
,	O
possessing	O
a	O
built-in	O
MIDI-editor	O
,	O
a	O
plotter	O
of	O
chords	O
,	O
a	O
player	O
,	O
a	O
metronome	O
and	O
other	O
tools	O
for	O
musicians	O
.	O
</s>
<s>
It	O
has	O
versions	O
for	O
Windows	B-Application
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
(	O
Intel	O
processors	O
only	O
)	O
and	O
is	O
written	O
by	O
the	O
French	O
company	O
Arobas	O
Music	O
.	O
</s>
<s>
Guitar	B-Language
Pro	I-Language
was	O
initially	O
designed	O
as	O
a	O
tablature	O
editor	O
,	O
but	O
has	O
since	O
evolved	O
into	O
a	O
full-fledged	O
score	O
writer	O
including	O
support	O
for	O
many	O
musical	O
instruments	O
other	O
than	O
guitar	O
.	O
</s>
<s>
Until	O
it	O
reached	O
version	O
4	O
,	O
the	O
software	O
was	O
only	O
available	O
for	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
Later	O
,	O
Guitar	B-Language
Pro	I-Language
5	I-Language
(	O
released	O
November	O
2005	O
)	O
undertook	O
a	O
year-long	O
porting	O
effort	O
and	O
Guitar	B-Language
Pro	I-Language
5	I-Language
for	O
the	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
was	O
released	O
in	O
July	O
2006	O
.	O
</s>
<s>
On	O
April	O
5	O
,	O
2010	O
,	O
Guitar	B-Language
Pro	I-Language
6	I-Language
,	O
a	O
completely	O
redesigned	O
version	O
,	O
was	O
released	O
.	O
</s>
<s>
This	O
version	O
also	O
supports	O
Linux	B-Application
,	O
with	O
32-bit	O
Ubuntu	B-Operating_System
being	O
the	O
officially	O
supported	O
distribution	O
.	O
</s>
<s>
On	O
February	O
6	O
,	O
2011	O
,	O
the	O
first	O
ever	O
portable	O
release	O
of	O
Guitar	B-Language
Pro	I-Language
(	O
version	O
6	O
)	O
was	O
made	O
available	O
on	O
the	O
App	O
Store	O
for	O
support	O
with	O
the	O
iPhone	B-Device
,	O
iPod	B-Device
Touch	I-Device
,	O
and	O
iPad	B-Device
running	O
iOS	B-Operating_System
3.0	O
or	O
later	O
.	O
</s>
<s>
In	O
2011	O
,	O
a	O
version	O
was	O
made	O
to	O
work	O
with	O
the	O
Fretlight	O
guitar	O
called	O
Guitar	B-Language
Pro	I-Language
6	I-Language
Fretlight	O
Ready	O
.	O
</s>
<s>
The	O
tablature	O
notes	O
being	O
played	O
in	O
Guitar	B-Language
Pro	I-Language
6	I-Language
Fretlight	O
Ready	O
show	O
up	O
on	O
the	O
Fretlight	O
guitar	O
's	O
LEDs	O
which	O
are	O
encased	O
within	O
the	O
guitar	O
's	O
fretboard	O
to	O
teach	O
you	O
the	O
song	O
.	O
</s>
<s>
In	O
April	O
2017	O
,	O
Guitar	B-Language
Pro	I-Language
7	O
was	O
officially	O
released	O
with	O
new	O
features	O
and	O
dropped	O
Linux	B-Application
support	O
.	O
</s>
<s>
In	O
May	O
2022	O
,	O
Guitar	B-Language
Pro	I-Language
8	O
was	O
released	O
.	O
</s>
<s>
It	O
came	O
with	O
a	O
lot	O
of	O
new	O
features	O
,	O
the	O
most	O
significant	O
of	O
which	O
was	O
the	O
support	O
of	O
Macs	O
with	O
Apple	B-Device
Silicon	I-Device
.	O
</s>
<s>
for	O
the	O
song	O
to	O
be	O
composed	O
,	O
and	O
allows	O
live	O
previews	O
of	O
the	O
notes	O
to	O
be	O
played	O
at	O
a	O
specified	O
tempo	B-Application
.	O
</s>
<s>
Guitar	B-Language
Pro	I-Language
outputs	O
sound	O
by	O
means	O
of	O
a	O
library	O
and/or	O
,	O
as	O
of	O
version	O
5	O
,	O
the	O
""	O
(	O
RSE	O
)	O
which	O
uses	O
high	O
quality	O
recorded	O
samples	O
for	O
a	O
more	O
realistic	O
playback	O
.	O
</s>
<s>
Files	O
composed	O
using	O
Guitar	B-Language
Pro	I-Language
are	O
recorded	O
in	O
the	O
GP	O
,	O
GPX	O
,	O
GP5	O
,	O
GP4	O
and	O
GP3	O
format	O
,	O
corresponding	O
to	O
versions	O
7	O
,	O
6	O
,	O
5	O
,	O
4	O
,	O
and	O
3	O
of	O
the	O
software	O
.	O
</s>
<s>
These	O
file	O
formats	O
lack	O
forward	O
compatibility	O
,	O
and	O
opening	O
them	O
in	O
an	O
older	O
version	O
of	O
Guitar	B-Language
Pro	I-Language
prompts	O
the	O
user	O
to	O
upgrade	O
their	O
software	O
to	O
the	O
respective	O
version	O
.	O
</s>
<s>
The	O
main	O
hub	O
for	O
Guitar	B-Language
Pro	I-Language
tabs	O
was	O
(	O
and	O
still	O
is	O
)	O
the	O
Arobas-owned	O
mySongBook	O
.	O
</s>
