The Alto Wore Tweed is the first novel in the St. Germaine mystery series by Mark Schweizer. In this book, Hayden Koenig investigates the murder of a janitor found in the choir loft.

The series has been praised by readers as "Very funny stuff, particularly if you are a choir director or a church musician". It's clear that Schweizer obviously knows the world of church and church music from the inside. Add to that his ability to spin a great yarn, build and solve a satisfying mystery, and paint a colourful narrative landscape, and you have a winning recipe.