We delivered an AI Tuning Route Manager for a West Ashley piano tuner who works alone out of an Avondale garage and tunes 612 pianos a year -- one that books every six-month visit on the day he is already in that part of town, turns his thirty-second van notes into records and invoices, and moves the churches ahead of the first cold front, while fitting his daughter's driving hours and his father's audiologist into the same week.

He has tuned the same 1911 Steinway in an Avondale living room forty-one times. The first time he was twenty-six, fresh from an apprenticeship on upper King Street, and the woman who owned it made him a pimento cheese sandwich and stood in the doorway listening. Her granddaughter owns it now. He is fifty-two, works alone out of a converted garage behind his own house in Avondale, a few blocks off Savannah Highway, and last year he tuned 612 pianos: about 480 homes that want him every six months, twenty-three church sanctuaries and six schools.

The tuning was never the hard part. Charleston is. A piano is a wooden case holding roughly eighteen tons of string tension, and this town swings from ninety percent humidity in August to the dry snap of the first winter front, so every instrument drifts sharp all summer and falls flat by Christmas. His clients do not track that.

He did, in a paper ledger and his head: who was due, whose humidity system needed new pads and which churches had to be done before Advent. By last February 140 of his regulars were more than three months overdue, $6,200 in invoices sat unpaid on index cards, and he was driving from Folly Road to Summerville and back in one afternoon because the calls came in the order people remembered to make them. All of it shared one calendar with the rest of his life. His wife teaches middle-school science and coaches robotics.

Their sixteen-year-old has a learner's permit and forty hours of supervised driving to log, mostly with him. His father lives in assisted living in Summerville and needs rides to the audiologist. Somebody has to decide about dinner. In February we set up Muse, Meta's personal agent, on his Mac, under his own account, connected to his email, his texts, his calendar and the family's, his invoicing app, his bank and a spreadsheet he typed up from twenty-six years of ledger pages.

Three things wake it. Twenty-one days before any client's six-month date, it texts them two openings on a day he is already working their part of town, so a James Island piano lands on a James Island day. When he climbs back into the van after a tuning, he talks for thirty seconds -- make, pitch, what he heard -- and it writes the service record, sends the invoice and books the next visit. And every Sunday night it reads ten days of forecast dew points.

When the first real front of fall pushes them below forty, it pulls the churches forward so every sanctuary is in tune before Advent, and orders fresh pads for every client whose humidity system is due. The family's week runs through the same place. It fits his daughter's driving hours into the gaps between appointments and logs each drive, puts his father's audiologist visits on days he is already north on I-26 and orders dinner on the nights his wife has robotics. He drew the line himself.

It books and moves any tuning at his standard $165, never more than five in a day, because after five his ears are done. It never quotes repair work over $300, never books a Saturday, and never tells a family whether an old piano is worth saving. He makes that judgment with his hands on the keys. Late in September he and his wife drove to Beaufort for their twenty-fifth anniversary, four days with his phone in the glove box.

The first cool front came through the second night. By Friday morning it had pulled four churches up the list and had all twenty-three booked before the first Sunday of Advent. It also booked nineteen six-month visits, sent fourteen invoices and collected $2,310, ordered pads for six humidity systems, moved his father's hearing-aid fitting when the clinic called, and lined up his sister-in-law for three of his daughter's driving hours. He reads one message at nine each night, after the dishes.

It lists what was done and, at the bottom, whatever is his. That week there was one item: a family on Wappoo Road asking whether their great-grandmother's 1924 upright was worth restoring. He drove over on Tuesday morning and played it for twenty minutes before he said a word. Since February his overdue regulars have fallen from 140 to nine, and unpaid invoices from $6,200 to $410.

He has tuned 58 more pianos than he had by this point last year, driven about 2,900 fewer miles, and his daughter has thirty-six of her forty hours. The paper ledger still rides in the van. After the Avondale Steinway last month he wrote one line in it -- tuned, sounds like itself -- and closed it. It is the only thing he writes in it now.