4

The excerpt is the beginning of the Symphony No.5 in D minor, Op. 47, by Dmitri Shostakovich, composed 1937. It's the most popular of his symphonies. (further reading)


3

It's a bit from Bach's Toccata and Fugue! At 2:40, after a short general break, the piece picks up with that melody. I feel it is sampled a lot, and similar melodies have shown up a lot since it came out in the 18th century.


1

The song is "Clover" by Ramona Falls from the 2017 album "Inuit".


1

It was used in the song "Egyptian Reggae" by the Modern Lovers recently used in the movie sound track for "Baby Driver."


1

I wonder if you mean the Beatles' "Dig a Pony", from Let It Be! It has the "A... Ha... A.. Ha.." effect, and the "Because". There are clearly parts of your piece that don't match this, including parts you seem quite emphatic about, but... who knows, when taken with the effects of memory, time and imagination?


1

Based on information at this website Covers by JH. Could the song be "Tax Free" by Carlson and Hansson ? "They licensed the track Tax Free to Jimi Hendrix". I couldn't find a version with the intro you mention, but it seems a pretty good match to the other facts. The track is on one of the compilations released after Hendrix's death, &...


1

I found it. Epic Panorama 07 by August Wilhelmsson.


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