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What does a number above the 'staff' mean in tablature?
Such as the numbers 4 and 5 in this example.
It means the number of times you repeat the phase. Notice the two stacked asterisks (*'s) under numbers. Those are the tab analog to two dots in standard notation.
So, repeat the parts with two stacked asterisks on either side x number or times, 5 for the first bar and 4 for the second.
Required, but never shown