How much did a single record cost in 1980?

Can you explain the concept of a caged system diagram and how it is used in the context of data visualization? How many rappers are millionaires? How old is shazam conner son? Could you provide some tips on how to set up a direct box for recording? How can one learn how to improvise in music effectively? What is the difference between a ride cymbal and a crash cymbal in terms of their sound and usage in drumming? What is the difference between legato and slur in music notation and performance? How can I improve my skills in chord singing? What does the band name MIA mean? How can I order custom drum tracks for my music project? What is the singular possessive form of soprano? Did Nelly make the song just a dream for Ashanti? Who sang hurry hurry step right up? What is the average salary of a Rapper? Where can I find guitar sheet music for popular songs? Who wrote i-n-d-e-p-e-n-d-e-n-t do you know what that means? How can I improve my guitar playing technique, specifically focusing on the skill of plucking fingers? How can I obtain instrumental versions of songs? What rapper is respected for his assonance? How can I find and play the riptide tab on guitar?