Augmented 4th/ Diminished 5th Descending

The augmented 4th is an interval that spans four notes on the musical staff.  The diminished 5th spans five notes on the musical staff.  While they have different names these two intervals are the same size. They are both made up of 6 semitones or 3 whole tones, which is why they can be called a Tritone. It can be practiced the following ways.

Moveable Do:                       

Ti - Fa or  Fa - Ti

Song References:               

Opening notes on "Freezin" in Even Flow (Pearl Jam), Danse Macabre (Saint Saëns)

Scale Degree Numbers:   

7-4  or 4-7

*HINT - at first it may be useful to sing a perfect 5th below and ascend 1 semitone to find the tritone interval.

Sing the augmented 4th/ diminished 5th interval using the strategy of your choice. 

The interval will be played twice.