Headphones - singing with I used to use one phone and keep an ear free this seems to help

Singing with a recorder is best and learning to support the breath on the diaphragm not easy but worth I am 6 or 7 years older than Mr Dow but still haver over 3 octaves of voice rising to an E flat over top C in a full throated tenor voice. I can only do that through the diaphragm and its support