This paper argues that a Harmonic approach having level structures has more explanatory adequacy than generative analyses which stipulate intermediate steps, and also lack generalization for palatalization and labialization in English. In the case of palatalization, SPE regards it as two phonological processes in which the palatalization rule and the /y/-deletion rule are applied orderly, but the inapplicableness of the /y/-deletion rule in isolation leads to the need for intermediate steps as well as an unnatural rule application without generalization and conciseness. On the other hand, others look at palatalization as a fusion of the phonological processes of assimilation and deletion which arise simultaneously. Fusion may thus be analyzed by a transformational rule format, like a phonological process. But analysis through the transformational rule can't show mapping morphological information to phonological aspects or a proper sense of fusion, in which an interaction of two segments bring about a new segment, which is shared and maintained by each feature of the two segments. Therefore I adopt a Harmonic approach that is not only able to show a difference in the environment of palatalized consonants, but also explain the phenomenon without intermediate steps and rule ordering in three level-structures. In the case of labialization, the method of SPE analysis includes some questions, which are based on a determination of the underlying form and a [w]-insertion rule. As an alternative to that, others view the labialization as a fusion, which is also analyzed by a transformational rule, in which assimilation and glide deletion are applied simultaneously. But in this case, it also can't show a proper sense of fusion, in which I think the labialized consonant is a result that shares the manner features of one segment with the place features of the other segment. Therefore I analyze labialization in a Harmonic approach, in which I can explain it in an interlevel structure harmonically, without intermediate steps and rule ordering in three level-structures. For the generality of the phonological processes of this study, it will be necessary to further research other connected speech sounds and compare the framework used in this paper with other approaches.