Rocket Blastoff - Tetris (GB)
From Video Game Music Preservation Foundation Wiki
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Rocket Blastoff plays after Type-B's Level 9 Height 5 has been cleared. After the cutscene of the Russian dancers with Trepak playing in the background, an additional cutscene is shown of a rocket launching off of a launchpad. After this, the text CONGRATULATIONS! is displayed on screen.
The song was written by Hirokazu Tanaka in Z80 assembly using his sound driver. Hirokazu should be contacted for an official title.
Composition
The song is in the key of A♭ minor. The second square wave plays the following notes, all 8th notes, with the first square wave echoing the second square wave:
A♭ C E♭ A♭ B♭ D♭ F B♭ C E♭ A♭ C D♭ F A♭ D♭ B♭ D♭ F B♭ G B♭ D♭ G
The bass holds an A♭ for a dotted half-note, then plays an octave lower A♭ quarter note, and then loops.
The chord progression is as follows:
A♭ B♭m/A♭ A♭ D♭/A♭ B♭m/A♭ G°/A♭

