I answer the switchboard for a very large company. My job is to keep the solicitors away. The called asked for our IT director. Advised called that the best way to reach him is via email. They did not want his email, they wanted to speak to him. I explained that he is traveling & unavailable, email is the best form of contact. Called said IT director downloaded "white paper" and the called wished to offer him more services. No idea what "white paper" is but needless to say, they did not get thru nor did they take the email address.

Robert Booth is correct. I got a call, no vm with music or flutes.
Originally, the number came up as "wheelhouse", then I got an email from Robert.
They got my contact information and number because I downloaded a trade publications newsletter from TradePub.com (a netline corporation). Hope this helps!

Got a call from this number (312-533-2360) this morning on my home phone.  No talking, only flute music!  The name was listed as Robert Booth.  As far as I know, this is the first time they have called.  My phone picked up.  I don't answer if I don't know who's calling.

left recorded message of music - very irritating-  worse than no message at all.  this shows up as wheelhouse plus first four digits of number calling from.  Other numbers include 612-285-3087 and there are more.  calls from about 4-5 numbers and repeats every 20 days or so.  first time left music message always before no message.  obviously wasting my minutes.