Tune down 1/2 step

Gb|----------------------------------------------------------|
Db|------5----5------5---5----------5------------------------|
Ab|-------------------------3-3-3-3---5--0--2--3-4-5---------|
Eb|---3-----3----3-3---3-------------------------------------|
      |--------------2x---------------|

Gb|----------------------------------------------------------|
Db|------5-----------5--------------5------------------------|
Ab|-------------------------3-3-3-3---5----------------------|
Eb|---3-----3-3--3-3---3-3-----------------------------------|

Gb|----------------------------------------------------------|
Db|---3-----3---3---5----------------------------------------|
Ab|-----3-----3---3---5--0--2--3-4-5-------------------------|
Eb|----------------------------------------------------------|

Gb|----------------------------------------------------------|
Db|--------------5------------5--------------5---------------|
Ab|----------------------------------3-3-3-3---5-------------|
Eb|--0--1--2--3-----3-3---3-3---3-3--------------------------|

Gb|----------------------------------------------------------|
Db|-----------------------5----------------------------------|
Ab|------------5--3-3-3-3---5--------------------------------|
Eb|---3--2--0------------------------------------------------|

Gb|----------------------------------------------------------|
Db|-----------------------7----------------------------------|
Ab|---------------5-5-5-5---7--------------------------------|
Eb|---5--4--2--0---------------------------------------------|