sentences:  Ionian mode
  
  Ionian mode is a musical mode or, in modern usage, a diatonic scale also called the major scale.\override Score.TimeSignature #'stencil = ##f
  \relative c' { 
  
  
  It is the name assigned by Heinrich Glarean in 1547 to his new authentic mode on C (mode 11 in his numbering scheme), which uses the diatonic octave species from C to the C an octave higher, divided at G (as its dominant, reciting tone/reciting note or "tenor") into a fourth species of perfect fifth (tone–tone–semitone–tone) plus a third species of perfect fourth (tone–tone–semitone)