2 * 20-30 minute audio voice overs needed

Need 2 audio meditations - i wish 2 make the audios simular to the originals which i can provide. However i have slightly differnt content and either need to use the original back ground music (you will need to take the voice out of it to use it)or need you to provide something simular i.e same beats per minute and simular tone( i would perfer this). -audios are about 20-30 min long -I will provide the different content and the originals -please provide example of voice that will be used -please if you are interested i am after a fast turn around -want audios back in a clear and crisp mp3 format -also if accepted looking for voice for make some audio books for me for some books i have writen thanks for your interest and look forward to working with you andy