Version 5.5.3

Version 5.5.3 is out and includes some problem solving as well as fine improvements and enhancements:
• Rhythm: minimum tempo is now 20 bpm.
• Note reading: in addition to just the key, ‘c,d,e/doremi’ can now be ‘overridden’ by the teacher.
• Instruments: new sound examples for cello, double bass and acoustic guitar.
• Melody: now also possible with grand staff.
• Intervals and Theory: diminished fifth added.
• Quiz: quiz questions are numbered on the teacher page (for easier reuse).