Bis is a Latin prefix or suffix designating the second instance of a thing, thus preceding ter. An example in recent modern usage is the ITU-T modem standard from the late 20th century, V.32bis. Bis can also refer to:
Pachelbel's Canon in D major, a piece of chamber music scored for three violins and basso continuo and originally paired with a gigue in the same key, experienced a tremendous surge in popularity during the 1970s.
The first note of the C Major key is the C note and will equal the Ionian mode. The second note is the D note or Dorian mode, then the E note, Phrygian mode, F, G, A, B and C notes in that order. Each of these notes or chords have names for them, check out leading to modulation part 1.