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Señor Staff is an open-source music composition app for Mac OS X. It features a staff-based interface (rather than a tracker interface) for natural entry and readability, and supports playback to any MIDI device. Emphasis is placed on user efficiency and automated enforcement of musical constraints.

What's New

Version 0.8.2: Release notes were unavailable when this listing was updated.


Mac OS X 10.4 or later

*Previously available here

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Senor Staff User Discussion

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killerhamster Member IconComment+0

This app has just blown my left MBP speaker. thanks.

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Version 0.8.2
koodough Member IconReview+2

Yeah, finally a simple music notation thats is easy to use and free compared to Sibelius. Just one problem when I start the program up I almost pissed my pants. My muted internal speakers on my iMac played the loudest note it could ever have. Also my ipod earphones are almost broken because of it too. so I just turn off the playback.

I hope you get that fixed.

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Version 0.8.2
mkllow Member IconComment+2

It works without problems here (intel, 10.4.9) The software looks really promising, and works well in its present state too. Looking forward to future releases!

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Version 0.8
Paladino Member IconComment+79

While I don't get a "corrupt disk image" message when downloading this, the app just won't open for me. It starts to but then instantly quits.
Tried downloading from developer's site as well as MU but Senor Staff doesn't open.
OS 10.4.9.

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Version 0.8
Peter da Silva Member IconComment+94
Peter da Silva

I get "corrupt disk image" when I download it.

Reply1 reply
Version 0.8

The downloaded .dmg processes and mounts with no issues here. Verified on two different machines.

flopka Member IconComment+2

Cool, but I don't see how you can put in rests.

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Version 0.7

use the space bar

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> 5 1


Current Version (0.x)


Downloads 12,196
Version Downloads 10,413
License Free
Date 11 Jun 2007
Platform OS X / PPC 32 / Intel 32
Price Free