@vivekpontoosh: in terms of Bb, there is no suspended 4th in this case. The 3rd of a Bb chord would be some kind of D, such as Db for Bb minor or D for Bb major. If there were a 4th for a Bb chord, then we would encounter an Eb in the chord. Simply put, Bb G D reesults in a 1st inversion G minor chord.

A# is enharmonic (equivalent) to B-flat major.
(A# isn't used much because of all of the accidentals and double-sharps)
A# is an artifact from using the midi tables.

And if you look at this in Bb terms, it comes out to:
Bb G D, which is a raised 3rd (of 4th, or suspended)
which isn't a major triad

The major triad would be: Bb F D

Wrong translation: see above issue and fix proposed by @anter69

Approved, thank you!

Yeeees)

Fixed, thank you!

Lol holy sh*t!

Hi. Unfortunately I can't give any hint without making the solution too obvious. I would suggest checking out some functional programming katas, as they might give you some ideas.
The syntax trick involved is actually pretty trivial, but it is used in an obscure/weird way to add an extra challenge.

OK. Nothing you can't find out on your own. Press Test in the trainer. Read the error message.

Sorry. It's a puzzle.

Fixed.

I also

I am having the same problem

This is all because the description lacks 2 things:

• a direct working definition of chord. it's only in clicking the wiki link we see: In music theory, a major chord is a chord that has a root, major third, and perfect fifth.
• stating that inversions are allowed.

So, I can see why the idea of a Bb/A# chord comes to mind first, because that's its root.

You're right about a third defining chord modality, but we cannot assume the presence of an F as a member of this chord. arpeggios are chords simply played one note at a time, so they can also be just as complete or incomplete as any chord may or may not be, and broken_chords are no different in this principle.

Stack them in thirds you get G Bb D spelling Gm, and Bb is the minor third here (defined in the kata as A#) which just happens to be below the other two notes becasue the chord is inverted.