Yet was it ne’er my Fate, from thee to find A Deed ungentle, or a Word unkind: When others curst the Auth’ress of their Woe, Thy Pity check’d my Sorrows in their Flow:

It was a sumptuous nature, perhaps, that could not be brought to regard money; a natural generosity and kindness; and possibly a petty vanity that was pleased with praise, even with the praise of waiters and cabmen.

The words if, granting, and provided are suppositives.

I'm delighted that you should admire Beecham. A pompous little duckarsed bandmaster who stood against everything creative in the art of his time.