Miles Davis – Agharta (Full Album) 1975

It seems to be said that during a three-week tour in Japan in 1975, the trumpeter played two concerts at the Festival Hall in Osaka on February 1st; and that the afternoon show produced "Agharta" while the evening show was recorded for the album "Pangea" and nothing... oh no, according to Google Translate:
[...] In 1975, Davis, 48 years old, embarked on a three-week tour of Japan; between January 22 and February 8, he performed 14 concerts in large venues for enthusiastic crowds and reviews.

The Japanese critic Keizo Takada said that Davis was leading his "magnificent and energetic" band just as Duke Ellington had his orchestra: "Miles must be a genius at managing men and bringing out their hidden talents."

During the tour, he had been suffering from pneumonia and a bleeding ulcer that was worsening, while his side occasionally and unpredictably slipped out of his hold.

Unable to work the volume of his trumpet and pedal effects due to leg pain, he would drop to his knees to press them with his hand during performances.

To alleviate his pain and perform, he used codeine and morphine, smoked, and drank large amounts of Heineken beer.

On several occasions, Davis was able to play two concerts in one day, as he did on February 1st at the Festival Hall in Osaka.

"The Japanese were very nice," Henderson recalled during the concerts.

"They came in with suits and ties, and we proceeded to blow the roof off with a million amplifiers." [...]