Hi, I play electric bass, and am learning to sight read and play the old jazz and swing classics that were originally written for acoustic bass. Ive noticed that that while the bass transcriptions for the walking bass lines of these tunes ( Im using Smart Music) are usually all quarter notes, but when I carefully listen to the actual music being played, the bassist will jazz up a passage and give it more feel by occasionally doubling some notes, or by adding 8th or 16th notes, or adding a note or dropping a note during certain notes and chord changes. In other words their not playing on the click all the time. I don't want to sound stupid, but is there a name for this type of playing? I hear it in almost every swing piece where an acoustic bass is used. Is the term "articulation" or " adornments" or is it just swing bass? A perfect example is the base line for song "Take the A train" Thanks very much!