A lot of folks who appreciate music in the country can do or listen to any number of styles. These evolved from the spirituals of African American slaves and country music, and include such styles as old school R and B slow jams. These jams have been around or in practice for many decades, right back to the roots of rock and roll.
Jamming is simply a meeting between players who bring in their instruments to make impromptu music. It is a process for some, usually a thing that helps them practice chords and progressions as well as make songs. The creation of modern styles like rock, bluegrass and country has been dependent on these jams.
That is why many folks, especially musicians, like to jam once in a while so they can practice licks or trade musical ideas. There does need to be the same kinds of instruments, and in fact a complete set for the basic band set up may be ideal. Still, guitarists often group together specifically to do jams, and one the best jamming styles is rhythm and blues.
The new style r and b music though is far different from the old one. Blues is another factor here, and something which is guitar based. In fact musicians can do blues and old time stuff with only a couple of guitars and even more native instruments like banjos. Steel pedal guitars and other specialized instruments are also relevant.
Rhythm is made up of percussive effects, sometimes done by drums and other percussion instruments, or just the way players can hammer on the sound board of acoustic guitars or even the way they do the notes on the fret board. The slowest of jams are often the most beautiful in musical terms, and this is an acknowledged fact.
Some of the best known musicians are good on this, which is to say they might prefer doing it with their peers. In the recording studios, when there is time, these often do sessions that are like shooting the breeze between players and their instruments. These help them envision the notes and chords in their minds.
The sound of course can make each note stand out, and this can be done with vibratos and sustains for better placement. Slow jamming is one thing that is really spiritual and that is why some of the more romantic bands have these kinds of sounds. The upshot is that this is where the notes are played really slow so they can be appreciated.
But the process can also run faster, and it depends on the preference of course. Slower means that the playing is loose and smooth, and anyone is able to improvise on solos and on riffs. That makes the system very versatile, enabling musicians to let audiences almost feel the way they think with the notes.
The auditory effects seem really spaced so that each note is appreciated. There might be some drums and bass players in sessions like these, usually only one of each to maintain the rhythm. Their playing will be basic while the guitars can ramp up on solos and many kinds of stylistic playing.