Rat Pack

Is a portrait of Rat Pack, Rat Pack was the name by which a group of American actors and musicians from the Las Vegas scene were known.
I was looking for inspiration, I saw this image of this guys at Instagram, they seem so rude and free, like smoking laughing... then I started searching who they are because I'm not American and I'm not a 50s man so I didn't know this musicians from Las Vegas, I don't listen jazz usually but when I listened the first song from rat pack I found the inspiration.