Copynotes
is the home to several websites:
Chord123
a tool that displays chords and scales for
guitar, piano and harp
Rhythm123
a music tool that can act as a metronome
or you can use for rhythm practice
Shift4Me
info about a DIY system to add to a bicycle
Oelbrandt
website about the musician: Oelbrandt
Sunclock
a tool that displays the amount of sun hours
on any date, any location on Earth
Webles
a planning tool for online classes