And if he floated the floor.
Being a basement it's probably on concrete. I always thought a concrete floor was best for a theater or studio, but when talking to Paul Barton (PSB Speakers) some years ago he said research showed wood (an acoustic/vibration conductor) was actually better. That's because acoustic impacts (from the speaker sitting on the floor) travel through the floor faster than sound through air, so that impulse arrives at your body first. Turns out that's an important part of perceiving the impact or attack of a transient sound. Concrete almost completely dampens that effect.
Floating a wood floor on concrete does the trick.
Reminds me of my former life ... 18 years as an engineer with Dolby Labs, helping with testing as Dolby Digital was being developed for HDTV & DVD, creating & managing their in-house AV production group, even designed a couple recording studios, & spent a fair amount of time in the "industry reference" movie theaters & up at "the ranch" aka George's place (Lucas).
It was great until the company went public & a board of directors, who knew nothing about what had made the company successful for 40+ years, started calling the shots. There was a mass exodus of us "old timers," it just wasn't fun to work there any more. And it's interesting that of that group that left, about 75% of us started our own companies, & we're successful.