1 EXHIBIT 3 JOINT FILING AGREEMENT The undersigned hereby agree that the statement on Schedule 13D with respect to the shares of Common Stock of Coventry Corporation is, and any amendment thereto signed by each of the undersigned shall be, filed on...

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                                                               EXHIBIT 3

                             JOINT FILING AGREEMENT



         The undersigned hereby agree that the statement on Schedule 13D with
respect to the shares of Common Stock of Coventry Corporation is, and any
amendment thereto signed by each of the undersigned shall be, filed on behalf of
each undersigned pursuant to and in accordance with the provisions of 13-d(f)
under the Securities Exchange Act of 1934.



Dated May 16, 1997



                                          WARBURG, XXXXXX VENTURES, L.P.

                                          By: Warburg, Xxxxxx & Co.,
                                                  General Partner



                                          By: /s/ Xxxxxxx Xxxxxxx
                                          Xxxxxxx Xxxxxxx
                                          Partner



                                          WARBURG, XXXXXX & CO.



                                          By: /s/ Xxxxxxx Xxxxxxx
                                              Xxxxxxx Xxxxxxx
                                              Partner



                                          X.X. XXXXXXX, XXXXXX & CO., LLC



                                          By: /s/ Xxxxxxx Xxxxxxx
                                              Xxxxxxx Xxxxxxx
                                              Member



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                                          By:/s/ Xxxxxxx X. Xxxxxxx
                                             Trustee


                                          By:/s/ Xxxx Xxxxxxxx
                                              Trustee


                                          By:/s/ Xxxxxxxx X. Xxxx
                                               Trustee