Leo realized then that he hadn't just bought a way to get to the second floor; he’d bought a reason to never want to stay there. The stairs didn't just lead upward; they led to a house that finally had a heartbeat. The Piano Stairs Experiment: Making Life More Fun

The first time Leo climbed them, he didn't just go to bed; he performed a clumsy C-major scale. Do-Re-Mi-Fa... he paused on the fifth step, the Sol vibrating through the soles of his slippers. He laughed, a sound he hadn't made in weeks.

True musical stairs are rarely sold as "off-the-shelf" home furniture; they are typically custom-ordered installations or modular kits:

Mrs. Gable’s eyes widened. She took a tentative step. Fa. Another. Sol. Soon, the two of them were choreographed in a frantic, giggling dance—one jumping on the "flats," the other hitting the "sharps."