Monitoring when editing blobs
As you move blobs up and down with the playback stopped, you’ll hear their pitch changing. The sound you hear, however, is a synthesized version of the original sound at the drag point (i.e. the point where you click to begin dragging) and intended simply to help you tune the note by ear.
In certain situations, however – such as when the singer is looking over your shoulder and wondering aloud why “his” voice has that synthetic sound – you might prefer to dispense with the aural feedback. In that case, choose Options > Note Editor and uncheck the option "Monitor When Editing Blobs"
Monophonic blob monitoring
Supposing you click in the position shown on this sung note and drag it upwards to sharpen it:
The note will play back solo – from its start but not to the end; only to the drag point, and then in an endless loop.
Drag the note upwards or downwards to tune it, and to the left or right to change the position of the loop. By moving the note simultaneously on both axes, you can intuitively control fluctuations of the pitch.
Polyphonic and multi-track blob monitoring
If you hold down the Cmd key while you are tuning a note, you will hear in addition all the other notes present at that point in the recording. Take this guitar chord as an example:
Without the Cmd key, as you tune this note or string (1) you will hear it in isolation; with the Cmd key, you will hear the other strings (2) and (3) vibrating at the same time. This allows you, as you shift the pitch of one note, to audition the resulting chord.
This works not only when, as here with the guitar, the notes of the chord are all on the same track, but also when they are on different tracks – for instance, with harmony vocals on multiple tracks. This allows you to appraise the harmonic intervals that are created as you shift single notes up and down.