It is the same series of notes made by a brass instrument.
The current series of notes entered circulation on 29 April 2010.
After the third call, a series of notes echoed back.
The current series of notes was issued on 4 April 2011.
A new series of notes came into circulation on 5 August 1976.
Three series of notes were issued, in 1958, 1967 and 1968.
For example, suppose you want to play a melody on a series of notes from different instruments.
A new series of notes began appearing in November 2006.
A new series of notes came out in 2011.
Hartley says she received a series of notes but nothing more.