MATCH (participants:NrParticipant:NrPerformance)
OPTIONAL MATCH (participants)<-[r]-(nrsr:NrSoundRecording:NrPerformance)
WITH participants, r
WHERE ($relType IS NULL OR type(r) = $relType)
AND (
    $hasSoundRecordings is NULL
    OR (
        (NOT $hasSoundRecordings)
        XOR
            EXISTS(
                (participants)<-[r]-(nrsr:NrSoundRecording:NrPerformance)
            )
    )
)
RETURN participants
ORDER BY {{orderByExpression}}
SKIP toInteger($offset) LIMIT toInteger($limit)