Carsten Dahl

Background piano is a contemporary, minimalist piano style designed to sit comfortably behind other activities such as reading, study, work, or meditation. The pieces are short, spacious, and consonant, prioritizing mood and texture over virtuosic display. Typical tracks feature soft dynamics (often with felted or muted pianos), slow tempos, gentle ostinatos, and simple diatonic harmonies colored by added 2nds or 9ths. Subtle ambience—room tone, reverb, light tape hiss—blurs edges and enhances a sense of stillness. It is music that rewards close listening yet never demands it, aligning with the ambient principle of being “as ignorable as it is interesting.”

Post-bop is a modern jazz style that emerged in the early-to-mid 1960s as a synthesis of bebop, hard bop, modal jazz, cool jazz, third stream ideas, and the experimental impulses of the avant‑garde. It typically features acoustic small ensembles (often trumpet, saxophone, piano, bass, and drums) interacting with highly flexible time, non-functional or modal harmony, and motivic development rather than relying strictly on bebop chord cycles. Its sound balances structure and freedom: forms are clearly composed and often intricate, but improvisers stretch time feels, reharmonize on the fly, and use advanced harmonic colors such as quartal voicings, pedal points, and chromatic planing. Canonical touchstones include Miles Davis’s mid‑’60s Second Great Quintet (e.g., E.S.P., Nefertiti), Wayne Shorter’s Speak No Evil, Herbie Hancock’s Maiden Voyage, Andrew Hill’s Point of Departure, and many mid‑’60s Blue Note recordings that pushed beyond hard bop.

Hard bop is a mid‑1950s subgenre of jazz that extends bebop’s virtuosic improvisation while bringing back a more explicitly African‑American groove. It incorporates pronounced influences from blues, rhythm & blues, and gospel—especially evident in riff‑based heads, church‑like harmonic movements on piano, and earthy saxophone phrasing. Compared with bebop, hard bop favors stronger backbeat accents, more grounded bass lines, and memorable, soulful melodies, all while retaining fast, harmonically rich improvisation when desired. Typical ensembles are small groups (often quintets) with trumpet, tenor sax, piano, bass, and drums. The style’s hallmark is the blend of bop harmony and lines with blues/gospel feeling and a driving swing feel.

Prepared piano is a performance technique and repertoire in which an acoustic piano is altered by placing objects ("preparations") such as screws, bolts, erasers, rubber, paper, wood, or coins on or between the strings, hammers, or dampers. These additions transform the instrument’s timbre, producing sounds that resemble drums, gongs, bells, muted plucks, rattles, or metallic chimes. While the piano remains the sound source, the result is a compact percussion orchestra with a pitched framework. Composers notate detailed preparation charts specifying the materials and their exact string locations, and performers balance conventional keyboard playing with inside-the-piano gestures and pedaling control. The music ranges from meditative and bell-like to motoric and intensely percussive, and it occupies a pivotal place in 20th- and 21st-century experimental and contemporary classical practice.

Jazz is an improvisation-centered music tradition that emerged from African American communities in the early 20th century. It blends blues feeling, ragtime syncopation, European harmonic practice, and brass band instrumentation into a flexible, conversational art. Defining features include swing rhythm (a triplet-based pulse), call-and-response phrasing, blue notes, and extended harmonies built on 7ths, 9ths, 11ths, and 13ths. Jazz is as much a way of making music—spontaneous interaction, variation, and personal sound—as it is a set of forms and tunes. Across its history, jazz has continually hybridized, from New Orleans ensembles and big-band swing to bebop, cool and hard bop, modal and free jazz, fusion, and contemporary cross-genre experiments. Its influence permeates global popular and art music.