basics with Do-along Dave


I’m David Zethmayr ( At I publish sheetmusic and self-teach resources for both music beginners and the many whose instrumental musical training left them unprepared to read music for singing with confidence (“sight-singing” without depending on accompaniment or a keyboard at hand).

I’m a software developer, inventor, a cappella director, sheetmusic engraver, bluegrass & folk singer-‘cellist, math education activist.

I’m also author of books that present logic for kids and computer scientists that should be part of middle-school and high-school math curricula. A father in India is using them with his children.

I’m old enough to wear purple. There are five healthy people who call me ‘Dad’, and two healthy new people who call me ‘Grampa’,


This blog may suddenly become unavailable at any time because of that shameless, flagrant self-promoting outlink at the top here. In such case you can track me at or through

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