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Scratch 1.3 was able to generate MIDI notes from the microphone, using the Note block. A MIDI synthesizer or sampler on one's computer would play each note or drum sound produced by a music block. The Play Drum () for () Beats block offered the 47 drums specified by General MIDI, and Set Instrument to () offered the 128 instruments specified by General MIDI. In versions prior to Scratch 2.0, Scratch used MIDI for the music blocks. Remember to stay safe while using the internet, as we cannot guarantee the safety of other websites.Ī list of the instruments available prior to Scratch 2.0 can be found here. This section has links to websites or programs not trusted by Scratch or hosted by Wikipedia.
![midi note number 60 midi note number 60](https://global.oup.com/us/companion.websites/fdscontent/uscompanion/us/static/companion.websites/9780199922963/images/MIDI_Keyboard.gif)
This table shows the beat number values for the most common rhythms in the most common time signatures, interpreted in the most basic way. Each note is 1 number larger than the previous, and the ratio of frequency is always 12 √ 2 (approximately 1.06), with A 4 being 440 Hz.
![midi note number 60 midi note number 60](http://www.barrytech.com/midi/240-1-kbd-scan/midi-kbd-bottom.jpg)
There are 131 notes on Scratch's keyboard, numbered from 0 (C -1, about 8.18 Hz) to 130 (B♭ 9, about 14917.24 Hz). To change octaves, simply add or subtract 12, or click on the arrows at the top of the keyboard. Even though the drop-down keyboard on each block shows only one octave of notes, a number can be put in manually to get any note. A line going from a long red box means the notes go to the same key on the piano. The most common enharmonic notes are included. All notes can be written in an infinite number of ways. Notes written in the two most common clefs (treble clef and bass clef) are connected to the piano.