I have a good memory for songs- it can lie dormant in my mind for decades and then when the trigger is pressed it comes back pretty much in its entirety. That is especially true of songs that I learned in my youth; my brothers and I sang wherever we went, practically.

It is much harder for me to bring a tune to mind. I like instrumentals and played for dances for years but a title does not bring back a tune. The first few notes will do it but often I can't recall thsoe first few notes. Words are an essential component to me.

Sometimes the only way I can bring up a tune at will is by assigning syllables to the first few notes. For instance, 'Mandolin Chimes' begins dut dut dut. lol