(Rockstar writes the score. Stackoda plays it.)

Modulus takes the number and the divisor
While the number is as high as the divisor
Put the number without the divisor into the number
End
Give back the number
End

Compose takes the melody, the harmony and the symbol
The system says STAFF
Rock the system with 10
For the line in 10
Put the line into the pitch
If the pitch is the melody or the pitch is the harmony
Put the symbol into the cell
Else
If modulus taking the pitch, 2 is 0
Put " " into the cell
Else
Put "-" into the cell
End
End
Put "|" with the cell with "|" into the row
Put the system with the row into the system
Rock the system with 10
End
Rock the music with the system
End

(Turn one Unicode value into decimal Stackoda arithmetic.)
Encode takes the code
Put the code with silence into the digits
The place is 0
For the digit in the digits
Cast the digit into the value with 10
If the place is 0
Put 9 without the value into the melody
Compose taking the melody, -1, the quarter
Else
Compose taking 0, 8, the quarter
Compose taking 7, -1, the eighth
Put 9 without the value into the melody
Compose taking the melody, -1, the quarter
Compose taking 9, -1, the eighth
End
Build the place up
End
Compose taking 1, -1, the eighth
End

Let the quarter be "𝅘𝅥"
Let the eighth be "𝅘𝅥𝅮"
Rock the music
The message says Hello from Rockstar!
(The first command line argument replaces the default lyric.)
If arguments
Put arguments at 0 into the message
End

For the letter in the message
Cast the letter into the code
Encode taking the code
End

The break is silent
Rock the break with 10
Join the music into the score with the break
Write the score