Samba and the I - IV7 mouvement

[neueliteratur]

Hi,

I've been playing two samba songs at jams: Mas Que Nada and So Danco samba.

The first one starts as follows: Gm C7 ...

The second: C F7...

Are the I - IV7 or Im - IV7 movements closely related to the samba genre, or am I generalizing too fast?

Thanks for your sharing fo knowledge,

[jancivil]

EDIT, never mind that, I heard Sergio Mendes do mas que nade on the youtube.

yeah, that kind of I-IV is normative for a vamp in all kind of latin jazz.

[jancivil]

...there is a thing in a lot of latin music, minor i to IV, that Zappa called the Carlos Santana Secret Chord Progression, it's a basis for dorian mode kind of jamming over that as a vamp.

[psenior]

I don't know the difference between samba and bossa nova (maybe the tempos are faster?), but most Brazilian tunes that are jazz standards have very similar chord changes and song structures to all the other the tunes in that genre, which were composed by Americans and Europeans.