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authorckonstanski <kostcarl@isu.edu>2026-08-07 20:31:26 -0600
committerckonstanski <kostcarl@isu.edu>2026-08-07 20:31:26 -0600
commit26550494bd127e359ea383581ac4b047503c22f6 (patch)
tree5d26f50baaeed6a6bdf57c64f3e14140c7e9cace
parentdd68489aced9f0f0fe1d534f421b568912136f87 (diff)
stuff
-rw-r--r--.gitignore9
-rw-r--r--lisp/webapps/bogenherr/clojurescript/bogenherr/src/core.cljs4
-rw-r--r--youtube/instructional/trill-warmup/slides.tex140
3 files changed, 151 insertions, 2 deletions
diff --git a/.gitignore b/.gitignore
index 696753b..a67305f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,12 @@
*~
*swp
*.fasl
+*.aux
+*.bbl
+*.blg
+*.log
+*.nav
+*.out
+*.pdf
+*.snm
+*.toc
diff --git a/lisp/webapps/bogenherr/clojurescript/bogenherr/src/core.cljs b/lisp/webapps/bogenherr/clojurescript/bogenherr/src/core.cljs
index da1e424..d18a067 100644
--- a/lisp/webapps/bogenherr/clojurescript/bogenherr/src/core.cljs
+++ b/lisp/webapps/bogenherr/clojurescript/bogenherr/src/core.cljs
@@ -228,9 +228,9 @@
[:hr]
"Carlos Konstanski (970) 294-9708"
[:br]
- [:a {:href "https://github.com/ckonstanski/bogenherr/tree/master"
+ [:a {:href "https://git.ckons.org/bogenherr.git/tree"
:target "_blank"}
- "Source code on GitHub"]]])
+ "Source code in Git"]]])
;; start the react app
diff --git a/youtube/instructional/trill-warmup/slides.tex b/youtube/instructional/trill-warmup/slides.tex
new file mode 100644
index 0000000..2fe1835
--- /dev/null
+++ b/youtube/instructional/trill-warmup/slides.tex
@@ -0,0 +1,140 @@
+% To make a PDF from this source, use the pdflatex command.
+\documentclass[helvetica,english,utf8,notitle,nologo]{beamer}
+\usetheme{default}
+\usecolortheme{seahorse}
+
+\begin{document}
+
+\title{Trill Warmup}
+\author{Carlos Konstanski}
+
+\frame{\titlepage}
+
+\begin{frame}
+ \frametitle{Welcome to Bogenherr}
+ \begin{itemize}
+ \item Been playing the viola for 47 years.
+ \item Picked up the violin and viola d'amore later on.
+ \item 100\% classical musician. Not an improvisor. Focus is on
+ interpretation.
+ \item Channel mission: just a place to record my musical
+ journey:
+ \begin{itemize}
+ \item Performing
+ \item Pedagogy
+ \begin{itemize}
+ \item As student
+ \item As teacher
+ \end{itemize}
+ \end{itemize}
+ \item After 47 years I have gathered a lot of knowledge that others
+ might find useful.
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Warmup Video Series}
+ \begin{itemize}
+ \item Making a series of videos documenting my viola warmup
+ routine.
+ \item Five core drills which I do in this specific order:
+ \begin{itemize}
+ \item Trills
+ \item Short fast bow strokes
+ \item One-string ``modal'' scales
+ \item Arrepggios
+ \item Kreutzer \#24
+ \end{itemize}
+ \item All drills focus on three areas:
+ \begin{itemize}
+ \item Left hand
+ \item Right hand
+ \item Posture and alignment
+ \end{itemize}
+ \item Goals:
+ \begin{itemize}
+ \item Total relaxation and efficiency.
+ \item An easy and effortless technique with no pain and injury.
+ \item A highly capable technique that supports the hardest passages.
+ \end{itemize}
+ \item One video per drill.
+ \item This is the first video in the series which will cover Trills.
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Trill Warmup}
+ \begin{itemize}
+ \item (Play it on the A string to provide an example.)
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Core Checklist: Left Hand}
+ \begin{itemize}
+ \item Three contact points:
+ \begin{itemize}
+ \item Thumb
+ \item Base of index finger
+ \item Tips of fingers
+ \end{itemize}
+ \item Swing elbow to the correct angle for the string. Hand is
+ oriented such that the fingers naturally fall right onto the
+ correct spots.
+ \item All finger motion from the base knuckles.
+ \item Finger keeps its curved shape. No other joints move. Extra
+ attention to 4th finger.
+ \item Barely touch the strings. No extra force. Harmonics are OK,
+ even encouraged.
+ \item No tension in the hand, especially across the back of the hand
+ between the wrist and base knuckles. Floppy.
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Core Checklist: Right Hand}
+ \begin{itemize}
+ \item Tiny inputs and complete relaxation.
+ \item No extra weight on the bow stick. Glide across the surface
+ of the strings.
+ \item Contact points:
+ \begin{itemize}
+ \item Thumb tip against the stick.
+ \item Outside of thumb against the bow hair.
+ \item End joints of the first three fingers very lightly wrapped
+ around the top of the stick.
+ \item Thumb is directly opposite the crack between the 2nd and 3rd
+ fingers.
+ \item The outside of the thumb tip and the very tip of the second
+ finger should be in contact with the bow hair at all times.
+ \item The 4th finger curves relaxedly and sits on top of the
+ stick.
+ \item The thumb has a healthy amount of curve. The curve hangs
+ nearly straight down toward vertical.
+ \end{itemize}
+ \item Up-bow and down-bow motions are entirely linear. No extraenous
+ movement in any other plane. Feel the bow stick tugging against
+ the skin of the fingers, and also the thumb and middle finger
+ guiding the ribbon of bow hair.
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Core Checklist: Posture}
+ \begin{itemize}
+ \item Forces align vertically.
+ \item Button directly into neck.
+ \item Find instrument angle where the jawbone lines up with the
+ front edge of the chinrest.
+ \item Instrument held up by left hand (base of index finger and
+ thumb). No clutching with the head and shoulder.
+ \item Instrument should rest securely on the table with no help from
+ the head. No sloping angles. Stand straight with a proud chest and
+ noble neck.
+ \item Do not let the head tilt to the right. Lean slightly to the
+ left if anything, but vertical is best. Lead with your chest like
+ a ballerina.
+ \end{itemize}
+\end{frame}
+
+\end{document}