Listen to This by Alex Ross Page B

with the sassy glissando of the slide trombone.
    In the late twenties and thirties, recording technology captured the voices of numerous authentic practitioners of the Delta blues: Charley Patton, Willie Brown, Son House, Skip James, Robert Johnson, and others. These singers made a living variously as field hands, laborers, drifters, and bootleggers, playing in their spare time. All over their records you hear a rapid articulation of the descending chromatic figure—think of the “Crucifixus” bass line sped up and stripped down. When Willie Brown plays it on “Future Blues,” the strings snap violently in emphasis:

    Can’t tell my future, I can’t tell my past
Lord, it seems like every minute sure gon’be my last.

    Skip James, the canniest musician among Delta blues singers, uses the chromatic riff for ironic effect in “I’m So Glad”; it’s an ostensibly uplifting number with a gospel tinge, but the continual chromatic undertow undercuts the singer’s claim to be “tired of weeping, tired of moaning, tired of groaning for you.” Chromatic lines snake through James’s “Devil Got My Woman,” a beautifully baleful ode to love gone wrong: “I’d rather be the devil than be that woman[’s] man …” Robert Johnson, rumored to have sold his soul to the devil for the sake of his art, leaned heavily on the chromatic slide in such numbers as “Cross Road Blues,” “Me and the Devil Blues,” and “Walkin’ Blues.”
    The origins of the riff are obscure. It seems to have deep roots in black music, reaching back through ragtime to the sketchily documented repertories of nineteenth-century African-American song. It might even be related to slithery chromatic lines that have been recorded in chants of the Ewe and Yoruba peoples, in West Africa. Although it holds to the classic devil’s-staircase shape, it has little apparent connection to the ostinato laments of previous eras: it’s a decorative element, not a bass line. And it gives off a different vibe, in keeping with the emotional complexity of blues form. A blues is sensual, knowing, tough; it’s full of resilience, even as it heeds the power of fate. The gesture of lament annuls itself and engenders its opposite. This is the subtext of Duke Ellington’s pathbreaking 1935 piece Reminiscing in Tempo, a thirteen-minute jazz fantasia propelled by a short chromatic ostinato. It was written in the wake of the death of the composer’s mother, but it keeps sorrow at bay, ending in a jaunty, urbane mood. The trudging ostinato becomes a walking, dancing bass.
    Blues chromaticism entered the American mainstream through the hot jazz of the Roaring Twenties. It was also a favorite tool in the workshops of Tin Pan Alley: Gershwin loved to introduce half-step motion into the inner voices of songs like “Someone to Watch Over Me.” A hint of the descending chromatic bass shadows the opening of Richard Rodgers’s “My Funny Valentine.” Of course, Tin Pan Alley writers, many of them from Russian-Jewish backgrounds, had multiple sources for these tricks of the trade; they drew liberally on late-Romantic classical music and also on Yiddish song. One way or another, the sighing chromatic line became so widespread as a sign of worldly-wise sophistication that it turned into a journeyman cliche. Sometimes, though, it came bearing a more urgent message. When Frank Sinatra began making downcast concept albums in the later 1950s— In the Wee Small Hours, Only the Lonely, No One Cares, and other studies in Cold War melancholia—he seemed to require morose chromatic lines to set the tone. A lamenting pizzicato bass prowls through Sinatra’s “Angel Eyes,” whose Scotch-soaked emotional state goes from the vengeful to the suicidal (“Excuse me while I disappear”).
    Sinatra’s nocturnal ballads of the fifties forecast a weird and wonderful twist of musical history: the return, circa 1965, of the chromatic basso lamento, in strict, almost neo-Baroque guise. Why