Five lines of the alto clef

From the bottom to the top: F A C E G Fat Alley Cat Eats Garbage

Five lines of the bass clef

From the bottom to the top: G B D F A Good Boys Do Fine Always Grizzly Bears Don't Fly Airplanes

Five lines of the treble clef

From bottom line to top: E G B D F Every Good Boy Does Fine. Every Good Boy Deserves Fudge (or Footie, Friendship, Fun, Fruit, etc.)

Four spaces of the alto clef

From the bottom to the top: G B D F Green Birds Do Fly

Four spaces of the bass clef

From the bottom to the top: A C E G All Cows Eat Grass All Cars Eat Gas

Guitar string names

Guitar string names in standard tuning: E A D G B E Every Average Dude Gets Better Eventually Eggs Are Deliciously Good Breakfast Energy

Order of flats in key signature

The order of flats is B, E, A, D, G, C, and F (reverse order of sharps) Battle Ends And Down Goes Charles' Father. Before Eating A Doughnut Get Coffee First.

Order of sharps in key signature

The order of sharps in key signature notation is F, C, G, D, A, E, B Father Charles Goes Down And Ends Battle. Fat Cats Go Down Alleys Eating Birds.

Ukulele

Ukulele string names: G C E A Good Cooks Eat A-lot