Coordinating and mixing audiovisual content captured from geographically distributed performers

An apparatus comprising:

• a mobile computing device;
• and
• machine readable code embodied in a non-transitory medium and executable on the mobile computing device to receive via a communication network, a first audiovisual encoding of a first performer, including first performer vocals captured at a first remote device and first performer video;
• the machine readable code further executable to determine, from the first performer vocals, at least one time-varying, computationally-defined audio feature, wherein the computationally-defined audio feature determined from the first performer vocals includes one or more of a measure of tempo correspondence with a melody track, a measure of tempo correspondence with a harmony track, a measure of pitch correspondence with a melody track, a measure of pitch correspondence with a harmony track, a measure of tempo correspondence with a score, and a measure of pitch correspondence with a score;
• the machine readable code further executable to determine, from second performer vocals of a second audiovisual encoding of a second performer including the second performer vocals captured at a second device and second performer video, at least one time-varying, computationally-defined audio feature for comparison to the computationally-defined audio feature determined from the first performer vocals;
• and
• the machine readable code further executable to, based on comparison of the computationally-defined audio feature determined from the first and second performer vocals, dynamically vary relative visual prominence of first and second performer video throughout a combined audiovisual performance mix of the captured first and second performer vocals with a backing track and the first and second performer video.

A service platform, comprising:

• one or more computing devices;
• and
• machine readable code embodied in a non-transitory medium and executable on at least one of the one or more computing devices to receive via a communication network, a first audiovisual encoding of a first performer, including first performer vocals captured at a first remote device and first performer video;
• the machine readable code further executable to determine, from the first performer vocals, at least one time-varying, computationally-defined audio feature, wherein the computationally-defined audio feature determined from the first performer vocals includes one or more of a measure of tempo correspondence with a melody track, a measure of tempo correspondence with a harmony track, a measure of pitch correspondence with a melody track, a measure of pitch correspondence with a harmony track, a measure of tempo correspondence with a score, and a measure of pitch correspondence with a score;
• the machine readable code further executable to determine, from second performer vocals of a second audiovisual encoding of a second performer including the second performer vocals captured at a second device and second performer video, at least one time-varying, computationally-defined audio feature for comparison to the computationally-defined audio feature determined from the first performer vocals;
• and
• the machine readable code further executable to, based on comparison of the computationally-defined audio feature determined from the first and second performer vocals, dynamically vary relative visual prominence of first and second performer video throughout a combined audiovisual performance mix of the captured first and second performer vocals with a backing track and the first and second performer video.