I'm trying to analyze the ending chord progressions to Liszt's Liebestraum No. 3. The piece is in Ab-major.
The chord in the second half of measure 73 is a D diminished triad. This would appear to be a secondary leading tone leading to the V chord in Ab major. However, measure 74 starts with a B-flat minor seventh chord. The V(7) chord results in measure 75.
Could the chord in measure 73 be an unresolved secondary leading tone?
If a secondary chord doesn't resolve the way we'd expect, is it still okay to analyze it as vii/x, or should a different explanation for the chord be sought? I'd appreciate reading any thoughts on this. Thanks!