Next generation display and indexing of cataloging records are mainly influenced from the development of the FRBR conceptual model. While the process for collecting all relevant bibliographic records in a catalogue to an FRBR work entity has been extensively developed and tested in non interactive (offline) environment, the corresponding process has not been explored when meta-searching. This work presents the implementation and use of alternative clustering algorithms and similarity metrics for the composition of the FRBR work entities in the configurable meta-search engine meta-Composer. Moreover, it introduces a tool for the evaluation of the composition methods, which can be used either as complementary to the configuration process for the use of the best clustering methods to the searched catalogues or as a general testbed for the evaluation of the FRBR work entities composition process.