dev@170: <md-card>
dev@170:   <md-card-header>
dev@188:     <md-card-title>{{title}}</md-card-title>
dev@188:     <md-card-subtitle>{{description}}</md-card-subtitle>
dev@170:   </md-card-header>
dev@170:   <md-card-content>
dev@170:     <app-waveform
dev@170:       [audioBuffer]="audioBuffer"
dev@189:       [timeline]="timeline"
dev@189:       [trackIdPrefix]="title"
dev@170:     ></app-waveform>
dev@170:   </md-card-content>
dev@170: </md-card>