Can you guess who jams on 川の流れのように?

Do you know the chords that 美空ひばり plays in 川の流れのように?

What is the tempo of 美空ひばり - 川の流れのように?

Which chords are part of the key in which 美空ひばり plays 川の流れのように?

In which year was 川の流れのように first released?