If you read this blog you know I like song writing helper software. Cthulhu is a VST plug-in thats a simple/complex chord generator and arpeggiator. I would say it reminds me a little bit of the Max for Live Device Schwarzonator. Cthulhu is $39.
“Cthulhu is firstly a chord memorizer and player, allowing you to experiment with creating and reworking chord progressions with single-note presses. Included are over 150 factory chord presets allowing for a near-unlimited amount of possible musical-sounding chord progressions. Import MIDI or ‘record’ chords straight in, Cthulhu is able to analyze the chords you play and allow for various sorting options (Circle of 5ths, Chromatic, low note, etc) allowing for easy access over your chords! The other half of Cthulhu is a unique pattern-based arpeggiator, allowing incoming notes or chords to be manipulated in various rhythmic ways. The 8 tabs of the stepsequencer allow you to completely reshape the incoming MIDI notes, even a single note fed into the arp can become a unique and rhythmic riff! Even if you have other arpeggio software plug-ins, Cthulhu’s arp is unique and powerful with advanced features such as chord-arpeggio mode, ties, duration / velocity sequencing, intelligent transpose, harmony, and more!” –
For more info: xferrecords.com/products/cthulhu