Is the slow four step of older people's social dance refers to the blues dance

The slow four of ballroom dancing is also called the blues (BLUES) dance.

Blues dance music for 4/4 beat, the speed of about 30 bars per minute. The rhythm is slow, the steps are simple, and the dance is calm, stretching, smooth and free. It's easy to get started, and it's very suitable for beginners. But to dance well, you have to work hard.