<CHROMATIC
Rows are tuned One Semitone Apart >

B/C tuning

This tuning is fully chromatic.
On these instruments the rows are tuned a semitone apart.
This means that the full range of tones and semitones is availible.
Making it  possible to play in any key.
This box is normally played across the rows to play in the keys of  D and G.
The key of C is available straight row.
The number of bass chords availible when playing cross row is very limited.
B/C tuning is preferred by Irish musicians >
C#/D tuning
This tuning is popular with some Irish musicians. The key of D is played Straight row, and using the same cross row fingering as a B/C the keys of  E and A are availible.
C#/D tuning is preferred by Some Irish musicians  

<DIATONIC
Rows are tuned Five Semitones Apart >

D/G tuning.

These are two row instruments and play the basic scale of  D on one row and G on the other.
It is easier to use the bass chords when playing straight row.
On most D/G instruments the two low notes are replaced with Accidentals (Bottom button)
D/G tuning is popular with English country dance bands and Morris musicians.
NOTE :
Cairdín D/G Boxes can be supplied with LOW NOTES or ACCIDENTALS
(Or Both. At the expense of the Extreme high notes which are hardly ever used).
The Low note option allows the musician to use the box for Vocal Accompanyment
Typical arrangment might be a Low B note at the bottom of the "D" Row.
This allows the musician to play the low note on tunes and songs.
For example : The Low B note in "Landlord Fill the Flowing Bowl"
<D E>
<A C#>
<F# B>
C/F tuning
This tuning is popular in Continental Europe  

<TUNING      OPTIONS >

<On boxes with more than one set of reeds one of the reeds is tuned sharper than the other.
This gives a beating or tremelo effect.
Different types of tunings are availible Wet,Dry,Swing,Musette

<Dry and Swing tunings are the most popular >

DRY (Almost no tremelo.)
SWING
About half as much tremelo as the Paolo Soprani or Hohner pokerwork.
WET (Tremelo)
Instruments with a large amount of difference are refferred to as being "Tremelo" tuned,
i.e the Paolo soprani or the Hohner pokerwork.
MUSETTE
3 sets of reeds, one tuned sharp and one tuned flat with a very wet sound.
Not so popular in Ireland any more, but still popular in Scotland and France.