I've encountered something new I don't understand. I was practising 12 Bar Blues and I came along this structure:
begin| I Chord (G7) | I Chord (G7) | I Chord (G7) | I Chord (G7) |
| IV Chord (C7) | IV Chord (C7) | I Chord (G7) | I Chord (G7) |
| V Chord (D7) | IV Chord (C7) | I Chord (G7) | V Chord (D7) |end
What does 'V Chord (C7)' mean? Can someone clarify this?
Thanks.