fix duration support in piano
fix duration support in piano

ykarikos/turtle-roy,raimohanska/turtle-roy,raimohanska/turtle-roy,ykarikos/turtle-roy,ykarikos/turtle-roy,JSomerstone/turtle-roy,ykarikos/turtle-roy,raimohanska/turtle-roy,raimohanska/turtle-roy,JSomerstone/turtle-roy,raimohanska/turtle-roy,JSomerstone/turtle-roy,ykarikos/turtle-roy,raimohanska/turtle-roy,JSomerstone/turtle-roy,JSomerstone/turtle-roy,JSomerstone/turtle-roy,ykarikos/turtle-roy