Texas Walt scuffed the carpet with his boot. “Fact is, he’s talking about me playing a bigger part.”

“Why don’t you ask Mr. Van Dorn for a leave of absence?” Bell asked in a quiet, silky manner that Texas Walt Hatfield misinterpreted.

“Think the boss would go for that?”

“After we crack the case.”

Texas Walt worked a deep groove into the carpet. “Sorry, Isaac. I didn’t mean to say I won’t take home the gal I brung to the dance.”

“Appreciate it,” said Bell. “Here’s where we stand: I’ve got the boys watching Clyde on the eighth floor of the Imperial Building; I want you up top in the roof studios. I’ve seen Mademoiselle Viorets’s office on the seventh, and I’m heading now to the fourth floor where they do the recordings.”

“How you fixin’ to get in?”

“I already am in.”

THE TOUGH NUTS IN FANCY uniforms who guarded the Imperial Building lobby were not exactly friendly toward Isaac Bell, but he had visited Clyde Lynds often enough that they acknowledged a familiar face and greeted him by name.

“Afternoon, Mr. Bell,” said the doorman, then spoke sharply to the well-built men crowding behind Bell who were carrying musical cases for horns, saxophones, a clarinet, a violin, and a double bass. “Wait right there, gents! I’ll be with youse in a minute.”

“They’re with me,” said Bell.

“All of ’em?”

“Mr. Lynds requested a band.”

“Open those cases.”

“Gentlemen,” Bell said mildly, “they’re jumpy here. Show him your instruments.”

Hinged open, the cases revealed shiny trumpets and saxophones, clarinets, a little violin, and an enormous string bass.

“Fourth floor,” Bell told the glowering elevator operator, who glanced for the O.K. from the chief doorman before delivering them to the fourth floor.

Clyde Lynds was waiting impatiently in the recording room. “What took so long?”

“Nervous doormen thought the boys were smuggling Gatling guns.”

“Idiots— All right, boys, sit yourselves around that recording horn. Violin closest, trumpet over there, saxophone and string bass back there.”

“Where you want me?’ asked the clarinetist, a nattily dressed wisp of a fellow whom Isaac Bell had last seen in Idaho separating two bank robbers from their shotguns.

Clyde said, “Stand behind the violin and wait to come in until I tell you.”

The string bass player, most famous at the Van Dorn Detective Agency for infiltrating San Francisco’s corrupt police department, blew A on a pitch pipe to start the tuning process.

Clyde said, “When making acoustic recordings of music, we have to replace the violins with horns and clarinets and reinforce the string bass with a bass saxophone and the drums with banjos. One of my goals is to replace the acoustic mechanical systems invented by Edison. Edison machines can’t record strings and drums and can’t record piano, which is really just a bunch of strings and drums. It comes out flat and tinny.”