DigiTech Trio+ Band Creator Looper is $375 OBO
A versatile and creative guitar pedal that combines automatic backing-track generation with loop recording in a single stompbox, designed to help guitarists rehearse, write songs, and perform with a “virtual band.” 
🎶 What It Does
• Band Creator Engine: The pedal listens to your guitar playing (chords and rhythm) and automatically generates bass and drum accompaniment in real-time that matches your performance. You pick from multiple music genres and styles to shape the backing track.
Built-In Looper: Includes a looper with unlimited overdubs, letting you record guitar parts and layer ideas on top of the generated band parts. Loops and band parts can be stored, sequenced, and recalled. 
Full Song Structure: It can learn up to 5 different song parts (like intro, verse, chorus, bridge, outro) and play them back in sequence. Up to 12 songs with loops can be saved on the included microSD card. 
⚙️ Key Features
12 music genres with 12 selectable styles each, covering rock, blues, metal, jazz, country, pop, and more. 
Tempo and time signature control (e.g., 4/4, 3/4) with elastic time stretching to keep everything in sync as you play. 
Independent level knobs for bass, drums, and loops, plus built-in guitar effects tailored to the selected genre.