"Flow" is defined as "the rhythms and rhymes" of a hip-hop song's lyrics and how they interact – the book
How to Rap breaks flow down into rhyme,
rhyme schemes, and rhythm (also known as
cadence). 'Flow' is also sometimes used to refer to elements of the delivery (
pitch,
timbre,
volume) as well, though often a distinction is made between the flow and the delivery. Staying on the beat is central to rap's flow – many
MCs note the importance of staying on-beat in
How to Rap including
Sean Price, Mighty Casey,
Zion I,
Vinnie Paz,
Fredro Starr,
Del the Funky Homosapien,
Tech N9ne,
People Under the Stairs,
Twista,
B-Real,
Mr Lif,
2Mex, and
Cage.
MCs stay on beat by stressing syllables in time to the four beats of the musical backdrop. Poetry scholar
Derek Attridge describes how this works in his book
Poetic Rhythm – "rap lyrics are written to be performed to an accompaniment that emphasizes the metrical structure of the verse".
History Old school flows were relatively basic and used only few syllables per bar, simple rhythmic patterns, and basic rhyming techniques and rhyme schemes. Melle Mel is cited as an MC who epitomizes the old school flow –
Kool Moe Dee says, "from 1970 to 1978 we rhymed one way [then] Melle Mel, in 1978, gave us the new cadence we would use from 1978 to 1986". "He's the first emcee to explode in a new rhyme cadence, and change the way every emcee rhymed forever. Rakim,
The Notorious B.I.G., and
Eminem have flipped the flow, but Melle Mel's downbeat on the two, four, kick to snare cadence is still the rhyme foundation all emcees are building on". Artists and critics often credit
Rakim with creating the overall shift from the more simplistic old school flows to more complex flows near the beginning of hip-hop's
new school – Kool Moe Dee says, "any emcee that came after 1986 had to study Rakim just to know what to be able to do. Rakim, in 1986, gave us flow and that was the rhyme style from 1986 to 1994. From that point on, anybody emceeing was forced to focus on their flow". Kool Moe Dee explains that before Rakim, the term 'flow' was not widely used – "Rakim is basically the inventor of flow. We were not even using the word flow until Rakim came along. It was called rhyming, it was called cadence, but it wasn't called flow. Rakim created flow!" He adds that while Rakim upgraded and popularized the focus on flow, "he didn't invent the word". Kool Moe Dee states that Biggie introduced a newer flow which "dominated from 1994 to 2002", and also says that
Method Man was "one of the emcees from the early to mid-'90s that ushered in the era of flow ... Rakim invented it, Big Daddy Kane, KRS-One, and
Kool G Rap expanded it, but Biggie and Method Man made flow the single most important aspect of an emcee's game". He also cites
Craig Mack as an artist who contributed to developing flow in the '90s. Music scholar Adam Krims says, "the flow of MCs is one of the profoundest changes that separates out new-sounding from older-sounding music ... it is widely recognized and remarked that rhythmic styles of many commercially successful MCs since roughly the beginning of the 1990s have progressively become faster and more 'complex'". He cites "members of the
Wu-Tang Clan,
Nas,
AZ,
Big Pun, and
Ras Kass, just to name a few" as artists who exemplify this progression. Kool Moe Dee adds, "in 2002 Eminem created the song that got the first Oscar in Hip-Hop history
[Lose Yourself] ... and I would have to say that his flow is the most dominant right now (2003)".
Styles There are many different styles of flow, with different terminology used by different people –
stic.man of
Dead Prez uses the following terms – • "The Chant", which he says is used by
Lil Jon and
Project Pat • "The Syncopated Bounce", used by Twista and
Bone Thugs-n-Harmony • "Straight Forward", used by
Scarface,
2Pac, Melle Mel, KRS-One circa
Boogie Down Productions era,
Too Short,
Jay-Z,
Ice Cube,
Dr. Dre, and
Snoop Dogg • "The Rubik's Cube", used by Nas,
Black Thought of
The Roots,
Common,
Kurupt, and
Lauryn Hill • "2-5-Flow", a
pun of
Kenya's
calling code "+254", used by
Camp Mulla Alternatively, music scholar Adam Krims uses the following terms – • "sung rhythmic style", used by
Too Short,
Grandmaster Flash and the Furious Five, and the
Beastie Boys • "percussion-effusive style", used by
B-Real of
Cypress Hill • "speech-effusive style", used by Big Pun • "offbeat style", used by
E-40,
Outkast Rhyme MCs use many different rhyming techniques, including complex rhyme schemes, as Adam Krims points out – "the complexity ... involves multiple rhymes in the same rhyme complex (i.e. section with consistently rhyming words),
internal rhymes, [and] offbeat rhymes". There is also widespread use of
multisyllabic rhymes. It has been noted that rap's use of rhyme is some of the most advanced in all forms of poetry – music scholar Adam Bradley notes, "rap rhymes so much and with such variety that it is now the largest and richest contemporary archive of rhymed words. It has done more than any other art form in recent history to expand rhyme's formal range and expressive possibilities". In the book
How to Rap,
Masta Ace explains how Rakim and Big Daddy Kane caused a shift in the way MCs rhymed: "Up until Rakim, everybody who you heard rhyme, the last word in the sentence was the rhyming [word], the connection word. Then Rakim showed us that you could put rhymes within a rhyme ... now here comes Big Daddy Kane — instead of going three words, he's going multiple".
How to Rap explains that "rhyme is often thought to be the most important factor in rap writing ... rhyme is what gives rap lyrics their musicality.
Rhythm Many of the rhythmic techniques used in rapping come from percussive techniques and many rappers compare themselves to
percussionists.
How to Rap 2 identifies all the rhythmic techniques used in rapping such as
triplets,
flams,
16th notes,
32nd notes,
syncopation, extensive use of
rests, and rhythmic techniques unique to rapping such as West Coast "lazy tails", coined by
Shock G. Rapping has also been done in various
time signatures, such as
3/4 time. Since the
2000s, rapping has evolved into a style of rap that spills over the boundaries of the beat, closely resembling spoken English. Rappers like
MF Doom and
Eminem have exhibited this style, and since then, rapping has been difficult to notate. The American hip-hop group
Crime Mob exhibited a new rap flow in songs such as "
Knuck If You Buck", heavily dependent on triplets. Rappers including
Drake,
Kanye West,
Rick Ross,
Young Jeezy and more have included this influence in their music. In 2014, an American hip-hop collective from
Atlanta,
Migos, popularized this flow, and is commonly referred to as the "Migos Flow" (a term that is contentious within the hip-hop community).
Groove classes Mitchell Ohriner in "Flow: The Rhythmic Voice in Rap Music" describes seven "groove classes" consisting of archetypal sixteen-step accent patterns generated by grouping notes in clusters of two and/or three. These groove classes are further distinguished from one another as "duple" and "nonduple". Groove classes without internal repetition can occur in any of sixteen rhythmic rotations, whereas groove classes with internal repetition have fewer meaningful rotations.
Rap notation and flow diagrams The standard form of rap notation is the flow diagram, where rappers line-up their lyrics underneath "beat numbers". Different rappers have slightly different forms of flow diagram that they use:
Del the Funky Homosapien says, "I'm just writing out the rhythm of the flow, basically. Even if it's just slashes to represent the beats, that's enough to give me a visual path.",
Vinnie Paz states, "I've created my own sort of writing technique, like little marks and asterisks to show like a pause or emphasis on words in certain places.", and
Aesop Rock says, "I have a system of maybe 10 little symbols that I use on paper that tell me to do something when I'm recording." Hip-hop scholars also make use of the same flow diagrams: the books
How to Rap and
How to Rap 2 use the diagrams to explain rap's triplets, flams, rests, rhyme schemes, runs of rhyme, and breaking rhyme patterns, among other techniques. Because rap revolves around a strong 4/4 beat, with certain syllables said in time to the beat, all the notational systems have a similar structure: they all have the same 4 beat numbers at the top of the diagram, so that syllables can be written in-line with the beat numbers. This allows devices such as rests, "lazy tails", flams, and other rhythmic techniques to be shown, as well as illustrating where different rhyming words fall in relation to the music. ==Performance==