The bass clef staff consists of five lines and four spaces. Each line and space represents a specific note, and together they cover a range of pitches that the lower-register instruments play.
This can be remembered as ‘Every Green Bus Drives Fast’, whereas the spaces conveniently spell-out the word F-A-C-E. The bass ...
You could use this mnemonic to remember the notes on the lines: You could use this mnemonic to remember the notes in the spaces ... too low you can switch to bass clef: ...