chords

[henrikhank]

Hi!
I am learning a song in Bflat major. I am thinking about the Bflat11 chord. Could one use nonfunctional harmony and write the chord with roman numerals? Or is that just for triads and seven chords?

I am also learning another song in F major.
Sheet music: https://app.box.com/s/5ht6uliz965nrfpd8dd0
The first chord in the song is F major but you are also play other notes than what belongs to that chord. How do you explain that with music theory?

In music theory do you need to analyse the sheet music /partitura for all the instruments or do you look att the individual instruments?

[chopinlover01]

A B flat 11 chord is best voiced with jazz voicings IMO. Search the web for "B flat 11 jazz voicing" and you'll probably find some interesting ways to do so.
Non chord tones (such as in the Queen song) are used as passing tones; they add tension which is resolved when the tonic of whatever key you're in is reestablished.
*someone may need to check my theory...