Transition metals tend to form more coloured ions and compounds more than most other elements either in solid form or dissolved in a solvent like water. Examples of the colours of some transition metal salts in aqueous solution are shown below (grey = colourless in the diagrams).
Welcome to the Machine. Welcome to the Machine is the second song on Pink Floyd's 1975 album Wish You Were Here. Written by bassist Roger Waters, it features heavily processed synthesizers and acoustic guitars, as well as a wide range of tape effects. 1 Theme.
Doobie Brothers guitarist and lead singer Tom Johnston wrote this song, which they played live for three years before recording. Johnston told us: Generally I write the music first, and sometimes I have a devil of a time getting the words.andy Bachman has implied that The Doobie Brothers lifted the guitar riff of this song from the Bachman-Turner Overdrive song  Let It Ride .. According to Bachman, in 1972 The Doobie Brothers were sharing a dressing room with BTO for a show at The Warehouse in New Orleans, which is when they wrote Let It Ride..