Hall was inspired by the birth of his own quadruplet siblings.
From the pe.com
The following quadruplet of forms should make this point clear.
From the en.wikipedia.org
Why should a quadruplet based system evolve naturally?
From the newscientist.com
Indeed, one of her students, Isaac Roth, 8, is a quadruplet.
From the toledoblade.com
Joe wanted to see the first quadruplet be delivered, but he was standing at the wrong end, near Tracey's head.
From the desmoinesregister.com
Alcor has been sometimes considered a fifth member of the system, orbiting far away from the Mizar quadruplet.
From the sciencedaily.com
Opening with a quadruplet of strong, playlist friendly songs, the album is eminently listenable if slightly less charming than its predecessor.
From the theepochtimes.com
Various nationwide efforts since then to reduce their occurrence have helped to lower the number of quadruplet births from the 1998 high of 627.
From the toledoblade.com
More examples
Four: the cardinal number that is the sum of three and one
One of four children born at the same time from the same pregnancy
Quartet: a set of four similar things considered as a unit
In music a tuplet (also irrational rhythm or groupings, artificial division or groupings, abnormal divisions, irregular rhythm, gruppetto, extra-metric groupings, or, rarely, contrametric rhythm) is "any rhythm that involves dividing the beat into a different number of equal subdivisions from ...
To see quadruplets in your dream, represents wholeness. You are close to becoming who you really want to be.
Four notes in the space of three.
A group of 4 equal notes, to be executed in the time of 3 or 6 of the same kind in regular rhythm.