Cenotaph by DCS is a Revision 2012 demo, ranked #4 in the oldskool demo competition.

http://www.pouet.net/prod.php?which=59139

Snorpung, known from his previous Gameboy Classic Demos “20 Years” and “Oh!”, has released another Demo named “Gejmbaj”. Gameboy Classic Power in 2010!

http://pouet.net/prod.php?which=56367

XPMCK is a music (expressed in MML) compiler kit targeted towards various video game systems. It currently supports the following systems:

Capcom Play System (VGM output only)
ColecoVision
Commodore 64
MSX (KSS output only)
Nintendo Gameboy / Gameboy Color
SEGA Master System
SEGA Game Gear
SEGA Genesis

Besides the compiler and its source code, the kit includes playback libraries for all supported systems, as well as examples and brief documentation.

Changes:

* Added a transpose command.
* Added support for per-note macros.
* Fixed a bug in the handling of [] loops in the Gameboy and C64 playback libraries.
* Fixed a bug that would occur when the initial delay in an @MP macro was zero.
* Fixed some bugs in the compiler which would result in some AY-specific commands being ignored when outputting for the Amstrad CPC.
* Step values for intervals are now automatically given the correct sign by the compiler.

http://jiggawatt.org/muzak/xpmck/

The Original Pixelh8 Music Tech Game Boy Synthesizer is software that runs on an unmodified Game Boy or Game Boy Advance, enabling you to be able to control the game boys on board sound. You can edit the wave duty, pitch sweep and volume envelope as well as new additions such as unison, 5th power chords and octaves, turning the Game Boy into a real time instrument.

http://pixelh8.co.uk/download/

A very simple 16-step drum sequencer with eight different drum sounds. Originally designed for use in chip tune workshops. It was designed for for children ages 6-8 to learn the basics of sequencing on a familiar interface.

http://pixelh8.co.uk/download/

The Original Pixelh8 Death Ray Noise Generator is a software running on an unmodified Game Boy, enabling you to be able to control the GB’s board sound.

http://pixelh8.co.uk/download/

Oh! by Snorpung is a demo for the classic b/w/greyscale Gameboy!

http://www.pouet.net/prod.php?which=54175

Man meets machine is an invitro for the demoparty “Alternative Party 2009”, coded by the guys from Jumalauta.

http://www.pouet.net/prod.php?which=53578

XPMCK is a music (expressed in MML) compiler kit targeted towards various video game systems. It currently supports the following systems:

Capcom Play System (VGM output only)
ColecoVision
Commodore 64
MSX (KSS output only)
Nintendo Gameboy / Gameboy Color
SEGA Master System
SEGA Game Gear
SEGA Genesis

Besides the compiler and its source code, the kit includes playback libraries for all supported systems, as well as examples and brief documentation.

Changes:

Added support for the fifth Konami SCC channel.
Added a command for writing directly to a memory address or port.
Added the ability to output compressed VGM files (VGZ).
Added an alternative GBC noise frequency table (selected with #GB-NOISE 1).
Modified the data sequences generated at octave changes to use less space.
Updated the manual.

Thanks to the author, mic, himself for the news via ICQ.

http://jiggawatt.org/muzak/xpmck/

20 Year Tribute Demo to the Gameboy by Snorpung.

20Y is intended to be run on either the DMG, Pocket or the SGB. It’s not compatible with GBC nor GBA and will produce graphical glitches when run on the latter systems.

This demo relies heavily on the precise quirks of the hardware it’s supposed to run on, and there’s currently no emulator that is 100% accurate. So if you haven’t the means to use real hardware it’s strongly recommend to use BGB (bgb.bircd.org) as it is the only emulator to the authors knowledge that only has a few minor issues with the demo, and they are barely noticeable.

http://8bitcollective.com/forums/viewtopic.php?id=12325