Generate a Jam

Play → Jam Session → Generate Jam skips picking a song entirely: it synthesizes an endless 12-bar backing on the spot (a swung “blues box” bass line, not a second harmonica part), so you can jam without needing any existing content.

Before starting, pick:

• Key — a dropdown of all twelve chromatic keys.
• Progression — Standard (I-I-I-I-IV-IV-I-I-V-IV-I-V, the classic 12-bar form), Quick Change (moves to the IV a bar early), Minor Blues (the i/iv chords become minor), or Jazz Blues (a ii-V-I cadence in the last few bars).
• Position — which cross-harp position to play in: 1st (straight harp, same key as the jam), 2nd (cross harp, the classic blues choice — a harp a fourth below the jam key), or 3rd (a harp a whole step below).
• Tempo — type a BPM value directly (60–160; out-of-range or non-numeric input is clamped/corrected once you press Enter or click away).

Click Start Jam and you’re straight into an ordinary Jam Session — same two-column layout, same live hole-map feedback, same 12-bar grid — just with a generated backing instead of a real song’s. Restart resets the bass to the top of the loop; Quit Song returns to this setup page (with your key/progression/position/tempo remembered), not the song list, since there was never a song list involved.