Nieske wrote all of the compositions on Simplicity, which are performed by two groups: a trio including Nieske, Grenadier and drummer Nat Mugavero; and that trio plus the Lydian String Quartet. The charts are fresh and spare: Nieske's written the themes and string parts, but most pieces don't have preset chord changes. Not to worry, Grenadier's such a melodic, intelligent soloist that his open improvisation is totally coherent; he resolves his phrases perfectly. Nieske's a powerful, heavy bassist who really lifts the music as an accompanist and is a strong, inventive soloist. In both roles his playing is economical, but he makes every note count. Mugavero's musicianship also deserves a lot of praise; everything he plays is right on the money.