What Key? What Chords?

[Palo-Kai]

I have the notes to my song.
BBBCD BAAABC AABCAG

I don’t know the key for what’s written above.
Don’t know what chords to play for what’s written above.

I’d like to play it in D.

Yea, I did google it. Thank you for helping me.

[stanron]

That's an interesting problem. You probably know how long each note lasts but that information isn't in what you post.

As the last note is G I guess that it might be in the key of G and the chords will be G, C and D or D7, maybe also Em.

In the key of D you should use D, G A or A7 and possibly Bm. Experiment with theses chords and see if they fit.

[egordon99]

It's either C, Am, G, or Em.

Without any other information, it is impossible to determine which one of those four keys.

[Mandobart]

Maybe you could tell us the name of the song? Somebody here probably already knows it and can easily transpose it to D.

If its an original, then record yourself playing what there is of it. That would help.

[Mr. Jelly]

The sections end in D, C and G. So I will also guess that it's in G. So to transpose it to D try this.

F#F#F#GA F#EEEF#G EEF#GED

[rick-slo]

If those are single notes of a melody line in 3/4 time (I would group them as BBBCDB AAABCA ABCAG) then the key of G.

[egordon99]

Originally Posted by rick-slo

If those are single notes of a melody line in 3/4 time (I would group them as BBBCDB AAABCA ABCAG) then the key of G.

But it could certainly also be in the key of C with the cadence ending on the fifth of the C chord.

This is like trying to solve an equation with two variables but without the second equation.

[rick-slo]

Originally Posted by egordon99

But it could certainly also be in the key of C with the cadence ending on the fifth of the C chord.

This is like trying to solve an equation with two variables but without the second equation.

Could end with an imperfect cadence but less likely than a pefect one.

[egordon99]

Originally Posted by rick-slo

Could end with an imperfect cadence but less likely than a pefect one.

Yeah, if it's just the end of a line/phrase (as opposed to the whole song), an imperfect cadence could work.

Again, we are all just speculating at this point.

And not having ANY rhythm "clues", the ask is even more vague.

Would be nice if the OP came back with more details.

[rick-slo]

Originally Posted by egordon99

Yeah, if it's just the end of a line/phrase (as opposed to the whole song), an imperfect cadence could work.
Again, we are all just speculating at this point.
And not having ANY rhythm "clues", the ask is even more vague.
Would be nice if the OP came back with more details.

OP says his song so I assume then he composed it. Melody line fits most simply over chords G to D to G. Also I assume 3/4 (or 6/8) time. Possibly incorrect assumptions of course.

[Andyrondack]

Originally Posted by Palo-Kai

I have the notes to my song.
BBBCD BAAABC AABCAG

I don’t know the key for what’s written above.
Don’t know what chords to play for what’s written above.

I’d like to play it in D.

Yea, I did google it. Thank you for helping me.

Does it resolve to the last note G? That is does the tune sound like it's reached a conclusion when you play the G note? If so then it's in G and those are 5 of the notes from a G major scale. The intervals used in order are 3 4 5 2 1 so to transpose that to D then use the same intervals from a D major scale. You should be able to work out how to do that and nobody would be doing you any favours doing it for you, it's not possible for anyone to recomend any chords because we don't know which notes are the significant melody notes to harmonise without any idea of how long the notes are held for but my guess is try some chords from the key of G and see how it sounds.

[Robin, Wales]

Originally Posted by Palo-Kai

I have the notes to my song.
BBBCD BAAABC AABCAG

I don’t know the key for what’s written above.
Don’t know what chords to play for what’s written above.

I’d like to play it in D.

Yea, I did google it. Thank you for helping me.

Rather than everyone second guessing, if you recorded the melody for us, exactly as you play/sing it, then it would be easy for someone here to give you the chord backing.

[The Bard Rocks]

We are over-thinking. If the OP needs to get an answer to these questions, my guess is that the melody is simple - and in G.

[Ceabeceabe]

Originally Posted by Palo-Kai

I have the notes to my song.
BBBCD BAAABC AABCAG

I don’t know the key for what’s written above.
Don’t know what chords to play for what’s written above.

I’d like to play it in D.

Yea, I did google it. Thank you for helping me.

If you really want to play it in the key of D

BBB = Bm7 chord

C = no chord or C7

B = Bm

AAA = Amaj7

B = Bm

C = C7

AA = Amaj

BCAG = Amin7+9 to end on something sort of interesting