Sub Dominant (IV) in the key of G = C major chord. Notes are C, E, G in root position. With learning the sounds of the primary major chords with in a key, the sound of changing from the tonic to the subdomiant chords, voice leading is also used. From the last chord, arpeggio, we move to the closest tones from the tonic to the subdominant chord. G chord (I) to C chord (IV)
G chord tones were G, B, D.
C chord tones in root position are C, E, G.
Voice leading tones in closest proximity to the next chord are:
From G = G, B, D. For C we use G, C, E. and the syllables for the C chord are do, fa, la.. moveable do system shifts the tonal center regrdless of key.
Here are the chords and arpeggios.
Next listen to the chords and the order of their being played. Followed by the arpeggios and the order of their being played. Notes & syllables.... G chord = (G)do, (B) me, (D)sol, (B)me, (G)do.... C chord = do(G), fa(C), la(E), fa(C), do(G) ....