Thanks for starting this - I agree completely. Legend and the Piano Concerto, it seems to me, are really very fine and moving pieces indeed, and for my money Ireland's greatest orchestral works. Other than them, the solo piano music, especially Sarnia and the Sonatina, contain some of Ireland's very best, and are probably, taken as a whole, the finest set of British piano miniatures of this type, subtle and allusive, very detailed and polished works but often with Ireland's very personal ruggedness (his strongly imprinted personality, a mix of typical rhythmic, melodic and harmonic fingerprints, makes him one of the most interesting, attractive and easily identifiable composers of his time). I regret to say I don't know the songs.
One tidbit I always like to trot out on Ireland threads - JI was the examiner for one of my grandmothers' ABRSM Grade 5 exam!

We had an interesting discussion about Ireland on a thread on the old board IIRC. Let me try to find a link....