...first, nobody ask why it's called ruff bossa, because I don't know. It doesn't make any sense.
But, it's a really handy method for soloing, kicks and set-ups, and modern, textural playing in jazz, using Syncopation by Ted Reed. It has an easy hand-to-hand motion that that seems adapted to the snare drum, so it's especially good when playing brushes. Here I'll give a few ideas for practicing it. Hit the link above to get a summary of the basic method.
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Anyhow, for the following examples we'll use the rhythm from line 3 on p. 34 in Syncopation:
Here's the ruff bossa pattern for that rhythm, as it would be played on one surface:
1. Play the accents on the cymbals:
2. As above, add bass drum on all of the cymbal notes:
3. As above, but add bass drum only on the accents corresponding with the long notes in the book rhythm— anything longer than an untied 8th note. The example rhythm has long notes on the 1, 2, and & of 3.
4. Play only the accents corresponding with long notes on the cymbal, plus bass drum. So the remaining accents are played on the snare. This is a way for playing kicks and setups, but is usable also in soloing.
5. Play on the snare drum, except the accent on the 1, and the last accent in the measure; play those on the cymbal and bass drum:
A lot of the patterns in the book don't give you an accent on 1, so obviously that won't work for all of them.
6. Play the last accent in the measure on the cymbal/bass drum:
An obvious thing I didn't mention is to move the accents to the tom toms— or any part of the pattern to the toms. This method has such a strong RLRL motion (albeit with occasional doubles on either hand) that the possibilities for moving to the toms are kind of limited, and not real interesting to me.
You could play through the entire system all of these ways— running the interpretation while reading pp. 34-45 in Syncopation. Or just use this as a guide for different things to try while you work your way through it.