When Alexi, Master of Song enters the battlefield, search your library and/or graveyard for any number of songs with different names and put them onto the battlefield. Then shuffle.

Whenever you perform a song, put an additional melody counter on that song.

Whenever you sacrifice a song, draw a card.

Instrument of All has all abilities of all instruments on the battlefield.

{1}{W}{U}{B}{R}{G}, {T}: Perform all songs you control without tapping an untapped instrument you control.