Tomorrow Will Never Know interpretation
I think Mac wrote this song as his vision of what his death will be like. Every line in the song gives the vibe of leaving Earth and ascending to heaven, then reflecting on your time on Earth. The tempo and instrumentation represent the life slowly leaving your body as you succumb to the drugs in your system.
The kids playing in the background is a throwback to "English Ave" which is the first track on BSP, which was his first studio album. So this is bookending his life and career.
The phone ringing represents the loved ones calling him after he dies (Like AG did 928 times).
The song is 11 minutes 51 seconds long. His actual time was death was 11:51am.