Complex sentence: While working at WMMS in Cleveland, Halper discovered the rock band Rush; she claims she was also pivotal in getting them signed to a record contract, and that they dedicated their first two albums to her.
Split into simpler sentences: While working at WMMS in Cleveland, Halper discovered the rock band Rush. Halper was also pivotal in getting them signed to a record contract; as a result, the band dedicated their first two albums to her.