Revisiting a song from a decade ago, an ambient instrumental and more music from the week Lance Skiiiwalker feat. SiR: Peso Chicago-based singer, rapper and producer Lance Skiiiwalker (aka Lance Howard) teams up with singer-songwriter and fellow producer SiR (aka Sir Darryl Farris) for “Peso,” a languid, dreamy R&B tune that samples Tupac’s “Do For Love” from 1997’s R U Still Down? (Remember Me). The …