Some of his religious works were really beautiful, but he had strange obsessions.

Berlioz greatly admired his master and could not help showing, especially in his earlier works, traces of this admiration.
That is the reason for the syncopated and jerky passages without rhyme or reason and which can only be explained by his unconscious imitation of Leuseur's faults.

In imitating a model the resemblances occur in the faults and not in the excellences, for the latter are inimitable.

So the excellences of the _Requiem_ are not due to Leuseur but to Berlioz.

He had already thrown off the trammels of school and shown all the richness of his vigorous originality to which the value of his scores is due.
In his _Memoirs_ Berlioz related the tribulations of his _Requiem_.