The rhythm is a simple bossa nova pattern. I have a lesson on bossa nova patterns here: https://youtu.be/kWDzOINvkiY
Guitar Tab as a PDF:
Sheet Music Direct: https://www.sheetmusicdirect.com/en-US/se/ID_No/1297238/Product.aspx
History:
“How Insensitive” is a jazz standard composed by Brazilian musician Antonio Carlos Jobim, who is often credited as one of the founders of the Bossa Nova genre. The song, originally titled “Insensatez” in Portuguese, was written in 1963 with lyrics by Vinicius de Moraes.
“How Insensitive” has become a popular jazz standard and has been covered by many musicians, both in instrumental and vocal versions. It has also been used in films, TV shows, and advertisements, and remains a beloved and enduring example of Jobim’s musical style and influence.
Philip
https://freewheelinguitar.com/