Opening Lines Of Songs

What song starts with "Please allow me to introduce myself / I'm a man of wealth and taste."

What song starts with "All the leaves are brown / And the sky is grey."

What song starts with "Hello darkness my old friend / I’ve come to visit you again"

What song starts with "Yesterday, all my troubles seemed so far away…"

What song starts with "You can tell by the way I use my walk I’m a woman’s man ..."

What song starts with "Oh, the shark, babe, has such teeth, dear And it shows them pearly white"

What song starts with "One, two, three o'clock, four o'clock rock, Five, six, seven o'clock, eight o'clock rock"?