Key Of Bb Major...
Key of:    Bb Major
        7 Tones in key:              Bb, C, D, Eb, F, G, A       (I, ii, iii, IV, V, vi, vii)
        3 Primary Chords:         Bb, Eb, F                          (I, IV, V)
        3 Secondary Chords:     Cm, Dm, Gm                     (ii, iii, vi)
        Dominant 7th chord:      F7                                     (V7)
  Danman says..."Check out the chart"...Bb Major 
  Scale Step      Root     3rd    5th   Chord Type
         I         Bb      D     F   Major
        II        C      Eb     G   Minor
        III        D      F     A   Minor
        IV        Eb      G     Bb   Major
        V        F      A     C   Major
       VI        G      Bb     D   Minor
       VII        A      C     Eb   Diminished