La# 12 Bar Blues
I – I – I – I – IV – IV – I – I – V – IV – I – V progression in La# major
La# 12 Bar Blues — I – I – I – I – IV – IV – I – I – V – IV – I – V
The A# 12-bar blues (A# – A# – A# – A# – D# – D# – A# – A# – F – D# – A# – F) is the bedrock of blues, rock, and jazz — twelve bars, three chords, infinite expression. Combine the Minor Blues scale with Major Pentatonic for the classic note-bending vocabulary that defines the genre. Mixolydian fills in the gaps between pentatonic positions with diatonic color. With dominant seventh voicings (A#Maj7 – A#Maj7 – A#Maj7 – A#Maj7 – D#Maj7 – D#Maj7 – A#Maj7 – A#Maj7 – F7 – D#Maj7 – A#Maj7 – F7), the raw blues character comes fully alive.
Playing in La# major
A# (Bb) major requires barre chords rooted at fret 1 on the A string or fret 6 on the E string. Despite the barre demands, it is a common key in funk, New Orleans R&B, and brass band music. The open D string can ring as the major third for added color. A# is a intermediate-level key on guitar because the open D string is the major 3rd of Bb, adding a bright color if allowed to ring. Expect to rely on barre chords throughout, which builds hand strength and unlocks the entire fretboard.
Voice Leading
The bass line moves through A# to A# (ascending unison), A# to A# (ascending unison), A# to A# (ascending unison), A# to D# (ascending perfect fourth), D# to D# (ascending unison), D# to A# (descending perfect fourth), A# to A# (ascending unison), A# to F (descending perfect fourth), F to D# (descending whole step), D# to A# (descending perfect fourth), A# to F (descending perfect fourth). The predominantly stepwise bass motion creates smooth, connected voice leading. When the progression loops, the bass returns from F to A# by perfect fourth.
Capo Transposition
To play in A# using familiar open chords: capo 1 with open A shapes; capo 3 with open G shapes; capo 6 with open E shapes. Choose the capo position that gives you the voicings you prefer — lower capo positions produce a fuller sound, while higher positions create a brighter, mandolin-like timbre.
Scales for Soloing
A# 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, A# Mixolydian adds the flat seventh for an authentic blues-rock edge.
Strumming Pattern
Use a shuffle pattern: D-u-D-u with swung eighth notes at 80-120 BPM. The triplet feel is essential — think of each beat divided into three, skipping the middle note. Add palm muting on the bass strings for a tighter groove.