arkwright

Good job! And you changed key for the Trio (as you should).

Everything you can do on a C or G harmonica you also can do on a 20 button (or more) C/G anglo. Playing anglo will give you more harmonic freedom. The anglo concertina should be ideal for playing German folk tunes, or any major key tunes, and it allows you to add more harmony than you could on a harmonica. The greater harmonic possibilities arise because you can find the same note in both directions. For example suppose you are playing "Muss I Denn" in the key of C: [CDE,EGF, etc... ] Try playing the melody on the right hand C row. To harmonize the F note in the melody, you can play a full F chord in the left hand by using the C note in the G row. That is a simple example; I'm sure you will find many more. With a 30-button anglo the possibilities are greater because you get a G on the draw, A on the press, and a low F on the draw in the top row.

Springs can also be salvaged from old accordions and reused. I got some from a local accordion repairman, cut them down and they worked well. The main thing is to get the wire gauge that will fit into the existing hole. Only tools needed were a wire cutter and needle-nose pliers.