Complex sentence: Subsequently, there appeared some bands in the 70s, such as Témpano (Iceberg) and the progressive rock trio Ficcion (sobre el abismo), who moved on to a more progressive (Atabal Yemal) or new wave sound (Essequibo).
Split into simpler sentences: Subsequently, there appeared some bands in the 70s, such as Témpano (Iceberg) and the progressive rock trio Ficcion (sobre el abismo). Tempano moved on to a more progressive (Atabal Yemal) or new wave sound (Essequibo).