Question

Asalamu alaikum.
May question is, in Khalaf reading why is the basmalah between two suras not read, second question have anyone qaari recorded Khalaf and please if you could send me any websites that has Khalaf reading, May Allah reward you for this noble work your doing ameen.

Answer

Wa alaikum assalaam wa rahmatu Allahi wa barakatuh.

There are two ways of reciting that are named after the famous scholar of recitation Khalaf; one is the riwaayah of Khalaf ‘an Hamzah , the other is the recitation named after Imam Khalaf himself, and is referred to as Khalaf Al-Bazzar, or Khalaf Al-‘Ashr.  This recitation is one of the three recitations that are outlined in the poem  by Imam Ibn Al-Jazaree. We assumed you meant Khalaf ‘an Hamzah, but it may be you meant the recitation of Khalaf. 

It is not Khalaf alone that joins two surahs together without the basmalah, but in any case, this is all transmitted from the Prophet himself, , in authentic chains of transmission.  Sometimes the Prophet, , would recite the basmalah of the next surah when joining two surahs together, sometimes he would stop with a sakt on the end of a surah and go on without a basmalah, and other times he would join the end of the first surah with the beginning of the next surah with no stop in between.  This is for joining in recitation one surah with the next sequential surah.  All of the qira’aat though, start a recite the basmalah if they are starting their recitation at the beginning of a surah, with the exception of surah At-Tawbah.  

The following link has some surahs recited in the way of  : http://audio.islamweb.net/islamweb/index.cfm?fuseaction=SpeakerAudio&SpeakerID=609

We could not find an audio file of the recitation of Khalaf Al-‘Ashr. 
Jazakum Allahu khairan, and may Allah increase you in knowledge.
Wa assalaam alaikum.