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Agua Doçe in E
Key of E
E major is arguably guitar's most powerful key. The open low E and high E strings ring sympathetically as the root, while the open B provides the fifth. This triple reinforcement gives E-based riffs and chords unmatched depth and volume. E is a beginner-level key on guitar because both the low E and high E strings ring as the root, and the open B is the fifth — three open strings reinforce the tonic chord. Beginners will find this key approachable since most chords use open voicings with minimal stretching.
Voice Leading
The bass line moves through E to C# (descending minor third), C# to D# (ascending whole step), D# to G# (ascending perfect fourth), G# to A (ascending half step), A to D (ascending perfect fourth), D to E (ascending whole step), E to C (descending major third), C to G (descending perfect fourth), G to F# (descending half step), F# to B (ascending perfect fourth), B to B (ascending unison), B to B (ascending unison), B to C# (ascending whole step), C# to C# (ascending unison). A half-step bass movement creates a strong leading-tone pull that demands resolution. The predominantly stepwise bass motion creates smooth, connected voice leading. When the progression loops, the bass returns from C# to E by minor third.
Scales for Improvisation
E major pentatonic works because every note is either a chord tone or a safe passing tone — there are no avoid notes. For soloing, this means you can play freely without clashing. Over dominant seventh chords, E Mixolydian adds the flat seventh for an authentic blues-rock edge.