  Providing security to audio songs for maintaining its intellectual property
right (IPR) is one of chanllenging fields in commercial world especially in
creative industry. In this paper, an effective approach has been incorporated
to fabricate authentication of audio song through application of message digest
method with alternation of coefficients of harmonics in multi-stages of higher
frequency domain without affecting its audible quality. Decomposing constituent
frequency components of song signal using Fourier transform with generating
secret code via applying message digest followed by alternating coefficients of
specific harmonics in multi-stages generates a secret code and this unique code
is utilized to detect the originality of the song. A comparative study has been
made with similar existing techniques and experimental results are also
supported with mathematical formula based on Microsoft WAVE (".wav") stereo
sound file.
