Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
All Night Session! Vol. 1 is an album by pianist Hampton Hawes from a session recorded the night of November 12, 1956 at Contemporary's Studios in Los Angeles and released on Contemporary Records.
In his review for AllMusic review states Arwulf Grenier wrote, "This studio session contained many elements associated with a live gig: the work took place during regular nightclub performing hours, the improvisations were mostly extended, and there were no alternate takes. A remarkable freshness and spontaneity prevailed throughout the session".