8. A computer program product for creating a hierarchal organization of spoken conference call topics, the computer program product comprising: one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising: program instructions to determine an identity of a first speaker from a group of participants on a conference call, wherein the group of participants are known; program instructions to determine a first conference call topic, wherein the first conference call topic is determined using a first portion of the first speaker's speech; program instructions to add a second speaker's identity to a queue of speakers while recording the first speaker's voice and capturing and presenting a second portion of the first speaker's speech to the group of participants, wherein the second portion of the first speaker's speech is a portion of the first speaker's speech directly preceding the second speaker's identity being added to the queue of speakers, and wherein the second portion of the first speaker's speech adds context for a reason to add the second speaker's identity to the queue of speakers; program instructions to determine a second conference call topic, wherein the second conference call topic is associated with words spoken close to a point in time during the recording of the first speaker's voice when the second speaker's identity is at front of the queue of speakers following a removal of the identity of the first speaker at the front of the queue of speakers, wherein the second conference call topic is a sub-topic of the first conference call topic; program instructions to link the first conference call topic and the second conference call topic into a hierarchal organization of spoken conference call topics; program instructions to detect a pause in the first speaker's voice for a predetermined interval of silence; program instructions to display, through a visual screen prompt, a warning to the group of participants that, in a predetermined interval of time, a first microphone will automatically mute for the first speaker and a second microphone will automatically unmute for the second speaker; and subsequent to a lapse of the predetermined interval of time, and through control of a first phone line and a second phone line, program instructions to deactivate the first phone line, causing the first microphone to mute, while, simultaneously, activating the second phone line, causing the second microphone to unmute.
8. A computer program product for creating a hierarchal organization of spoken conference call topics, the computer program product comprising: one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising: program instructions to determine an identity of a first speaker from a group of participants on a conference call, wherein the group of participants are known; program instructions to determine a first conference call topic, wherein the first conference call topic is determined using a first portion of the first speaker's speech; program instructions to add a second speaker's identity to a queue of speakers while recording the first speaker's voice and capturing and presenting a second portion of the first speaker's speech to the group of participants, wherein the second portion of the first speaker's speech is a portion of the first speaker's speech directly preceding the second speaker's identity being added to the queue of speakers, and wherein the second portion of the first speaker's speech adds context for a reason to add the second speaker's identity to the queue of speakers; program instructions to determine a second conference call topic, wherein the second conference call topic is associated with words spoken close to a point in time during the recording of the first speaker's voice when the second speaker's identity is at front of the queue of speakers following a removal of the identity of the first speaker at the front of the queue of speakers, wherein the second conference call topic is a sub-topic of the first conference call topic; program instructions to link the first conference call topic and the second conference call topic into a hierarchal organization of spoken conference call topics; program instructions to detect a pause in the first speaker's voice for a predetermined interval of silence; program instructions to display, through a visual screen prompt, a warning to the group of participants that, in a predetermined interval of time, a first microphone will automatically mute for the first speaker and a second microphone will automatically unmute for the second speaker; and subsequent to a lapse of the predetermined interval of time, and through control of a first phone line and a second phone line, program instructions to deactivate the first phone line, causing the first microphone to mute, while, simultaneously, activating the second phone line, causing the second microphone to unmute. 11. The computer program product of claim 8 , further comprising: program instructions, stored on the one or more computer readable storage media, to display a complete hierarchal organization of spoken conference call topics in a user interface after the conference call ends using recording analysis, wherein each conference call topic comprises a text summary of speech and a duration of time associated with each speaker.