Both tongue-in-cheek and gospel 🙂
I. Thou Shalt Tune Thy Instrument
II. Thou Shalt Keep Steady Rhythm — Count beats if necessary
III. Thou Shalt Take Turns Choosing Songs — Announce the song name and the key.
IV. Thou Shalt Not Speed — Start songs at a reasonable tempo. Speed up according to abilities.
V. Thou Shalt Signal Who Has The Solo — Follow a pattern when taking solo leads.
VI. Thou Shalt Listen To Others — If you can’t hear the lead, consider yourself too loud.
VII. Thou Shalt Welcome Others — Include everyone in your jam. Help everyone sound as good as they can.
VIII. Thou Shalt Not Steal Musicians From An Active Jam — With time, players move around anyway.
IX. Thou Shalt Try New Material — Original and different tunes are OK occasionally.
X. Thou Shalt Be Considerate Of Others — Help beginners.
credited to : Robert Rosenberg and Charlie Hall