8.4Great
Cthulhu (Xfer Records) — MIDI chord memorizer and arpeggiator. Score 8.4/10, price $39, formats and comparisons.
Plugin comparison
Cthulhu vs Song Cage Melody Rack
Specs, price and the Dubspot Score, side by side — with our verdict on which midi tool to buy.
Independent score / workflow fit / buying signal
Contenders
The side-by-side
Melody Rack is Song Cage's MIDI effect: sing or play a melody, then fourteen harmony-aware slots write chords and parts. $59, or $39 for Song Cage owners.
Technical matrix
Specs compared
| Signal | Cthulhu | Song Cage Melody Rack |
|---|---|---|
| Price | $39 | $59 / $39 owners |
| Dubspot Score | 8.4 | — |
| Formats | VST3, AU, AAX | AU, VST3 |
| Product type | MIDI chord memorizer and arpeggiator | — |
| Developer | Xfer Records | — |
| Typical price | $39 | — |
| Formats | VST3, AU, AAX | AU + VST3 macOS 11+; VST3 Windows 10+ |
| Primary job | fast harmonic sketching for electronic music | — |
| Catalog status | Current as of 2026 | — |
| Type | — | Harmony-aware MIDI effect |
| Effects | — | 14 slots including Chords, In Key, Harmony, Bones, Reply, Morph, Arp |
| Trial | — | 14 days, free Song Cage account |
| Price | — | $59, or $39 for Song Cage owners |
See the full plugin database for more comparisons.